12-8=
13-5=
10+9=
14-5=
18-9=
5+8=
12-3=
15-6=
13-8=
17-9=
14-7=
16-8=
4+9=
14-1=
18-8=
19-5=
9+10=
14-8=
11-5=
12-6=
11-4=
16-9=
16+3=
12-9=
11-7=
19-7=
