+ x=2 8∶x =∶ 50%x-9×3=25
65x−12x=6.3 x:12=67:65
1.2x=40.25 58−2x=14
x-38x=15 40%:x=0.2:4.5 25(x+13)=650
x:56=0.5:38 x5=415 0.2x-1.5=12