13-7=
18-5=
12-9=
8+7=
16-9=
7+9=
15-7=
11-4=
12-8=
17-9=
11-5=
9+5=
17-3=
9+9=
16-2=
7+6=
4+9=
14-3=
13-5=
14-7=
11-2=
13-4=
9-5=
8+5=
7+3=
10-7=
12-1=
14-6=
15-7=
11-3=
12+5=
13-7=
8+6=
7+4=
5+6=
15-6=
14-4=
10-10=
13-5=
7+6=
9+3=
10-0=
8+9=
9-5=
7+7=
8-2=
1+5=
7-6=
9+0=
12-8=
15-9=
7+9=
10-1=
6+7=
9-8=
3+3=
8-3=
2+8=
7-7=
12-6=