Question

Buna cat face -13+4
-7-8
-12-6+10
42-28-37
11-20+12+5-37
-10+15-18+20-9, -28+45-56+13, 1+13-25-14+7-11, 13-20-18+6-4+15, -12-30+4-7+58?

Answer 1

-7-8=-15
-12-6+10=-8
42-28-37=-107
11-20+12+5-37=-29
-10+15-18+20-9=-2
-28+45-56+13=-18
1+13-25-14+7-11=-29
13-20-18+6-4+15=-8
-12-30+4-7+58=13