7+9=
6+6=
16-8=
17-8=
11-3=
13-9=
7+8=
18-7=
11-9=
15-7=
12-7=
14-6=
5+8=
15-8=
8+9=
13-5=
20-10=
8+11=
12-5=
11-6=
16-7=
12-7= 14-6= 8+5= 11-4= 18-9=
4+9= 16-7= 14-7= 13-6= 15-8=
11-5= 9+5= 11-2= 16-9= 13-4=
13-6= 12-6= 15-9= 11-4=
13-7= 18-9= 15-7= 8+5=