Question

(+9)+(-9)=(+1)+(-8)=(+3)+(-12)=(-23)+(-12)=(+35)+(-20)=(+50)+(-22)=

Answer 1

1. 0
2. -7
3. -9
4.11
5. 15
6. 28

Answer 2

1. 0
2. -7
3. -8
4. -35
5. 15
6. 28