15-6=
36+2=
11-2=
72-50=
11-8=
61-20=
4+9=
8+54=
5+47=
42+8=
13-5=
13-6=
14-9=
16-7=
8+4=
12-5=
66-4=
72-9=
12-4=
20+28=
87-54=
58+36=
90-28=
36+44=
80-20=
96-70=
90-60=
90-80=
39+24=
45-17=