{"code":0,"msg":"success","data":[[{"head_title":"单选题","questions":[{"question_id":"2948163","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"15","grade_id":"7","question_source":"2015-2016学年山东省临沂市郯城县七年级上学期期末数学试卷","mode":"2","title":"把方程 x=1变形为x=2,其依据是( )
","kid_num":"2","paperid":"75675","save_num":"71","oldqid":"0","explain_sort_need":"0","paper":{"pid":"75675","title":"2015-2016学年山东省临沂市郯城县七年级上学期期末数学试卷"},"extra_file":"","question_text":"把方程 x=1变形为x=2,其依据是( )","options":{"A":"分数的基本性质","B":"等式的性质1","C":"等式的性质2","D":"解方程中的移项"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":1,"sort2":1,"is_use":0},{"question_id":"2948169","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"15","grade_id":"7","question_source":"2015-2016学年山东省临沂市郯城县七年级上学期期末数学试卷","mode":"2","title":"解方程1﹣ ,去分母,得( )
","kid_num":"1","paperid":"75675","save_num":"68","oldqid":"0","explain_sort_need":"0","paper":{"pid":"75675","title":"2015-2016学年山东省临沂市郯城县七年级上学期期末数学试卷"},"extra_file":"","question_text":"解方程1﹣ ,去分母,得( )","options":{"A":"1﹣x﹣3=3x","B":"6﹣x﹣3=3x","C":"6﹣x+3=3x","D":"1﹣x+3=3x"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":2,"sort2":2,"is_use":0},{"question_id":"2948115","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"15","grade_id":"7","question_source":"2015-2016学年山东省东营市广饶县七年级上学期期末数学试卷","mode":"2","title":"方程2x﹣1=3x+2的解为( )
","kid_num":"1","paperid":"75672","save_num":"66","oldqid":"0","explain_sort_need":"0","paper":{"pid":"75672","title":"2015-2016学年山东省东营市广饶县七年级上学期期末数学试卷"},"extra_file":"","question_text":"方程2x﹣1=3x+2的解为( )","options":{"A":"x=1","B":"x=﹣1","C":"x=3","D":"x=﹣3"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":3,"sort2":3,"is_use":0},{"question_id":"3659841","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"15","grade_id":"7","question_source":"2016-2017学年山东省临沂市兰陵县七年级上学期期末数学试卷","mode":"2","title":"若代数式4x﹣5与 的值相等,则x的值是( )
","kid_num":"1","paperid":"161011","save_num":"98","oldqid":"0","explain_sort_need":"0","paper":{"pid":"161011","title":"2016-2017学年山东省临沂市兰陵县七年级上学期期末数学试卷"},"extra_file":"","question_text":"若代数式4x﹣5与 的值相等,则x的值是( )","options":{"A":"1","B":"","C":"","D":"2"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":4,"sort2":4,"is_use":0},{"question_id":"3784916","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"13","grade_id":"7","question_source":"2016-2017学年福建省莆田市仙游县郊尾、枫亭五校教研小片区七年级上学期期中数学试卷","mode":"2","title":"方程 =x﹣2的解是( )
","kid_num":"1","paperid":"173526","save_num":"73","oldqid":"0","explain_sort_need":"0","paper":{"pid":"173526","title":"2016-2017学年福建省莆田市仙游县郊尾、枫亭五校教研小片区七年级上学期期中数学试卷"},"extra_file":"","question_text":"方程 =x﹣2的解是( )","options":{"A":"x=5","B":"x=﹣5","C":"x=2","D":"x=﹣2"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":5,"sort2":5,"is_use":0},{"question_id":"3784918","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"13","grade_id":"7","question_source":"2016-2017学年福建省莆田市仙游县郊尾、枫亭五校教研小片区七年级上学期期中数学试卷","mode":"2","title":"老师在黑板上出了一道解方程的题 =1﹣ ,小明马上举手,要求到黑板上做,他是这样做的:
4(2x﹣1)=1﹣3(x+2)①
8x﹣4=1﹣3x﹣6②
8x+3x=1﹣6+4③
11x=﹣1 ④
x=﹣ ⑤
老师说:小明解一元一次方程的一般步骤都知道却没有掌握好,因此解题时有一步出现了错误,请你指出他错在( )
","kid_num":"1","paperid":"173526","save_num":"104","oldqid":"0","explain_sort_need":"0","paper":{"pid":"173526","title":"2016-2017学年福建省莆田市仙游县郊尾、枫亭五校教研小片区七年级上学期期中数学试卷"},"extra_file":"","question_text":"老师在黑板上出了一道解方程的题 =1﹣ ,小明马上举手,要求到黑板上做,他是这样做的:
4(2x﹣1)=1﹣3(x+2)①
8x﹣4=1﹣3x﹣6②
8x+3x=1﹣6+4③
11x=﹣1 ④
x=﹣ ⑤
老师说:小明解一元一次方程的一般步骤都知道却没有掌握好,因此解题时有一步出现了错误,请你指出他错在( )
","options":{"A":"①","B":"②","C":"③","D":"④"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":6,"sort2":6,"is_use":0},{"question_id":"2531439","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"","grade_id":"7","question_source":"2018-2019学年数学人教版七年级上册3.3解一元一次方程(二)——去括号与去分母同步练习","mode":"2","title":"解方程3﹣5(x+2)=x去括号正确的是( )","kid_num":"1","paperid":"1097611","save_num":"74","oldqid":"0","explain_sort_need":"0","paper":{"pid":"1097611","title":"2018-2019学年数学人教版七年级上册3.3解一元一次方程(二)——去括号与去分母同步练习"},"extra_file":"","question_text":"解方程3﹣5(x+2)=x去括号正确的是( )","kid_num":"1","paperid":"173757","save_num":"65","oldqid":"0","explain_sort_need":"0","paper":{"pid":"173757","title":"2016-2017学年湖北省孝感市大悟县七年级上学期期中数学试卷"},"extra_file":"","question_text":"下列方程中,变形正确的是( )","options":{"A":"由3x﹣2=4,得3x=4﹣2","B":"由2x+5=4x﹣1,得2x﹣4x=1﹣5","C":"由﹣ x=2,得x=8","D":"由 x=﹣2,得x=﹣3"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":8,"sort2":8,"is_use":0},{"question_id":"4376258","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"数与式(11)+—+代数式(52)+—+同类项、合并同类项(57) ","mode":"2","title":"如单项式2x3n﹣5与﹣3x2(n﹣1)是同类项,则n为( )
","kid_num":"1","paperid":"230438","save_num":"236","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"如单项式2x3n﹣5与﹣3x2(n﹣1)是同类项,则n为( )","options":{"A":"1","B":"2","C":"3","D":"4"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":9,"sort2":9,"is_use":0},{"question_id":"3885293","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"19","grade_id":"7","question_source":"2016-2017学年广东省汕头市澄海区七年级上学期期末数学试卷 ","mode":"2","title":"若5x+2与﹣2x+7的值互为相反数,则x﹣2的值为( )","kid_num":"1","paperid":"184175","save_num":"102","oldqid":"0","explain_sort_need":"0","paper":{"pid":"184175","title":"2016-2017学年广东省汕头市澄海区七年级上学期期末数学试卷 "},"extra_file":"","question_text":"若5x+2与﹣2x+7的值互为相反数,则x﹣2的值为( )","options":{"A":"﹣5","B":"5","C":"﹣1","D":"1"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":10,"sort2":10,"is_use":0},{"question_id":"3647121","question_type":"1","question_channel_type":"1","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"14","grade_id":"7","question_source":"2016-2017学年江西省宜春市七年级上学期期末数学试卷","mode":"2","title":"下列方程中变形正确的是( )
①4x+8=0变形为x+2=0;
②x+6=5﹣2x变形为3x=﹣1;
③ =3变形为4x=15;
④4x=2变形为x=2.
","kid_num":"1","paperid":"160139","save_num":"60","oldqid":"0","explain_sort_need":"0","paper":{"pid":"160139","title":"2016-2017学年江西省宜春市七年级上学期期末数学试卷"},"extra_file":"","question_text":"下列方程中变形正确的是( )
①4x+8=0变形为x+2=0;
②x+6=5﹣2x变形为3x=﹣1;
③ =3变形为4x=15;
④4x=2变形为x=2.
","options":{"A":"①④","B":"①②③","C":"③④","D":"①②④"},"sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"2"},"sort":11,"sort2":11,"is_use":0}],"scores":{"3647121":{"score":"2"},"3659841":{"score":"2"},"3784916":{"score":"2"},"3784918":{"score":"2"},"3789050":{"score":"2"},"3885293":{"score":"2"},"4376258":{"score":"2"},"2948169":{"score":"2"},"2948163":{"score":"2"},"2531439":{"score":"2"},"2948115":{"score":"2"}},"sum_score":22,"question_num":11},{"head_title":"填空题","questions":[{"question_id":"4579034","question_type":"4","question_channel_type":"4","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"—+解一元一次方程+++++++++ ","mode":"2","title":"方程 x﹣2=4的解是.\n\n","kid_num":"1","paperid":"243410","save_num":"83","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"方程 x﹣2=4的解是.","options":"","sub_explanation":[""],"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":{"1":""},"score":{"score":1,"subScore":1},"sort":12,"sort2":12,"is_use":0},{"question_id":"4579028","question_type":"4","question_channel_type":"4","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"—+解一元一次方程+++++++++ ","mode":"2","title":"当x=时,代数式 与 互为相反数.\n\n","kid_num":"1","paperid":"243410","save_num":"122","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"当x=时,代数式 与 互为相反数.","options":"","sub_explanation":[""],"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":{"1":""},"score":{"score":1,"subScore":1},"sort":13,"sort2":13,"is_use":0},{"question_id":"4579070","question_type":"4","question_channel_type":"4","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"1","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"—+解一元一次方程+++++++++ ","mode":"2","title":"当x=时,代数式2x+3与3x﹣2的值相等.\n\n","kid_num":"1","paperid":"243410","save_num":"68","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"当x=时,代数式2x+3与3x﹣2的值相等.","options":"","sub_explanation":[""],"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":{"1":""},"score":{"score":1,"subScore":1},"sort":14,"sort2":14,"is_use":0},{"question_id":"4579030","question_type":"4","question_channel_type":"4","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"—+解一元一次方程+++++++++ ","mode":"2","title":"若4x﹣1与7﹣2x的值互为相反数,则x=.\n\n","kid_num":"1","paperid":"243410","save_num":"76","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"若4x﹣1与7﹣2x的值互为相反数,则x=.","options":"","sub_explanation":[""],"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":{"1":""},"score":{"score":1,"subScore":1},"sort":15,"sort2":15,"is_use":0},{"question_id":"4579012","question_type":"4","question_channel_type":"4","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"—+解一元一次方程+++++++++ ","mode":"2","title":"已知m1=3y+1,m2=5y+3,当y=时,m1=m2.\n\n","kid_num":"1","paperid":"243410","save_num":"79","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"已知m1=3y+1,m2=5y+3,当y=时,m1=m2 . ","options":"","sub_explanation":[""],"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":{"1":""},"score":{"score":1,"subScore":1},"sort":16,"sort2":16,"is_use":0},{"question_id":"4579024","question_type":"4","question_channel_type":"4","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"—+解一元一次方程+++++++++ ","mode":"2","title":"在梯形面积公式S= (a+b)h中,用 S、a、h表示b,b=,当S=16,a=3,h=4时,b的值为.\n\n","kid_num":"1","paperid":"243410","save_num":"69","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"在梯形面积公式S= (a+b)h中,用 S、a、h表示b,b=,当S=16,a=3,h=4时,b的值为.","options":"","sub_explanation":["",""],"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":{"1":"","2":""},"score":{"score":"2","subScore":1},"sort":17,"sort2":17,"is_use":0}],"scores":{"4579012":{"score":1},"4579024":{"score":"2"},"4579028":{"score":1},"4579030":{"score":1},"4579034":{"score":1},"4579070":{"score":1}},"sum_score":7,"question_num":6},{"head_title":"计算题","questions":[{"question_id":"4419553","question_type":"5","question_channel_type":"5","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"解二元一次方程组++++3 ","mode":"2","title":"①2﹣ =x﹣②3(x﹣2)+1=x﹣(2x﹣1)
③ (用代入法)
④ (用加减法)
\n\n","kid_num":"2","paperid":"233291","save_num":"90","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"①2﹣ =x﹣②3(x﹣2)+1=x﹣(2x﹣1)
③ (用代入法)
④ (用加减法)
","options":"","sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"5"},"sort":18,"sort2":18,"is_use":0},{"question_id":"4579084","question_type":"7","question_channel_type":"5","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"0","grade_id":"7","question_source":"—+解一元一次方程+++++++++ ","mode":"2","title":"解一元一次方程\n\n","kid_num":"1","paperid":"243410","save_num":"722","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"解一元一次方程","options":"","sub_explanation":null,"list":[{"question_id":"33880465","qsn_id":null,"question_type":"5","question_channel_type":"0","is_explain":"0","is_on_sale":"0","question_status":"0","question_tags":"","chid":"3","xd":"2","create_by":"zhongfangzhi","create_uid":"7263239","create_date":"2017-06-10 17:24:07","update_by":"","update_uid":"0","update_date":"2023-11-04 02:28:49","update_reason":"","audit_by":"","audit_uid":"0","audit_date":null,"audit2_by":"","audit2_uid":"0","audit2_date":null,"opinion":null,"parent_id":"4579084","sort":19,"is_objective":"0","difficult_index":"0","master_level":"0","exam_type":"0","evaluated":"0","region_ids":"","grade_id":"0","question_source":"","mode":"2","is_delete":"0","md5sum":"","title":"","kid_num":"0","paperid":"0","save_num":"0","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":"5(x﹣1)﹣2(3x﹣1)=4x﹣1","options":"","answer":"解:去括号得:5x﹣5﹣6x+2=4x﹣1,移项合并得:﹣5x=2,
解得:x=﹣0.4;
","answer_json":["解:去括号得:5x﹣5﹣6x+2=4x﹣1,移项合并得:﹣5x=2,
解得:x=﹣0.4;
"],"explanation":"","pic_answer":"0","pic_explanation":"0","sub_explanation":null,"knowledge":null,"category":null,"done":false,"myanswer":"","sort2":1},{"question_id":"33880469","qsn_id":null,"question_type":"5","question_channel_type":"0","is_explain":"0","is_on_sale":"0","question_status":"0","question_tags":"","chid":"3","xd":"2","create_by":"zhongfangzhi","create_uid":"7263239","create_date":"2017-06-10 17:24:07","update_by":"","update_uid":"0","update_date":"2023-11-04 02:28:49","update_reason":"","audit_by":"","audit_uid":"0","audit_date":null,"audit2_by":"","audit2_uid":"0","audit2_date":null,"opinion":null,"parent_id":"4579084","sort":20,"is_objective":"0","difficult_index":"0","master_level":"0","exam_type":"0","evaluated":"0","region_ids":"","grade_id":"0","question_source":"","mode":"2","is_delete":"0","md5sum":"","title":"","kid_num":"0","paperid":"0","save_num":"0","oldqid":"0","explain_sort_need":"0","paper":null,"extra_file":"","question_text":" ﹣ =1+ .","options":"","answer":"解:去分母得:3x﹣5x﹣11=6+4x﹣8,移项合并得:﹣6x=9,
解得:x=﹣1.5.
","answer_json":["解:去分母得:3x﹣5x﹣11=6+4x﹣8,移项合并得:﹣6x=9,
解得:x=﹣1.5.
"],"explanation":"","pic_answer":"0","pic_explanation":"0","sub_explanation":null,"knowledge":null,"category":null,"done":false,"myanswer":"","sort2":2}],"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"10","subScore":["5","5"]},"sort":19,"sort2":19,"is_use":0}],"scores":{"4419553":{"score":"5"},"4579084":{"score":"10","subScore":["5","5"]}},"sum_score":15,"question_num":2},{"head_title":"解答题","questions":[{"question_id":"3333085","question_type":"5","question_channel_type":"6","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"23","grade_id":"7","question_source":"2015-2016学年四川省内江市威远县威煤中学七年级下学期期中数学试卷","mode":"2","title":"解方程: ﹣ =1.\n\n","kid_num":"1","paperid":"115527","save_num":"100","oldqid":"0","explain_sort_need":"0","paper":{"pid":"115527","title":"2015-2016学年四川省内江市威远县威煤中学七年级下学期期中数学试卷"},"extra_file":"","question_text":"解方程: ﹣ =1.","options":"","sub_explanation":null,"knowledge":null,"category":null,"is_collect":false,"done":false,"myanswer":"","score":{"score":"5"},"sort":21,"sort2":20,"is_use":0},{"question_id":"3631789","question_type":"5","question_channel_type":"6","is_explain":"1","is_on_sale":"1","question_status":"2","chid":"3","xd":"2","parent_id":"0","is_objective":"0","difficult_index":"3","master_level":"2","exam_type":"2","evaluated":"0","region_ids":"11","grade_id":"7","question_source":"江苏省苏州市立达中学2016-2017学年七年级下学期期中考试试卷","mode":"2","title":"若不等式组 {2x+312(x-3) ,的整数解是关于x的方程2x-4=ax的根,求a的值.","kid_num":"3","paperid":"157827","save_num":"151","oldqid":"0","explain_sort_need":"0","paper":{"pid":"157827","title":"江苏省苏州市立达中学2016-2017学年七年级下学期期中考试试卷"},"extra_file":"","question_text":"若不等式组 ,的整数解是关于x的方程2x-4=ax的根,求a的值.