16+3=
16+30=
32-4=
13-7=
15-6=
28+2=
71-7=
9+60=
50-20=
23+30=
67-5=
30+40=
87+7=
58-50=
30-7=
96-60=
9+4-3=
22-2-6=
52-30+8=
4+4+4=
63-(35+5)=
80-(50-30)=
70+(12-7)=
60-30-8=