Integer addition and subtraction

-4

3+(-7)

-12

-7-5

-5

-4-1

-6

2-8

9

4-(-5)

5

-2-(-7)

4

-8 + 12

-3

9+(-12)

2

-8 + 10

-2

-8 + 6

8

6- (-2)

-8

-6-2

5

-2 + 7

-4

-6-(-2)

-9

-2 - 7

9

2 - (-7)

9

3 - (-6)

-3

3 - 6

-5

2-7

3

-3 - (-6)

-20

-8 - 12

9

9 + 0

-9

-3 - 6

7

7 - 0

4

0 - (-4)

-5

0 - 5

-4

8 - 12

4

12 - 8

4

-8 - (-12)

-3

1 - 4