Answer:

1. +3

2. +4

3. considering (*10) as positive, the answer is +13

4. -15

5. +9

6. 0

7. -5

8. -19

9. +2

10. +9

Step-by-step explanation:

1. (+7) - (+4) = (+7) + (-4) = 7 - 4 = +3

2. (-2) - (-6) = (-2) + (+6) = -2 + 6 = +4

3. (+10) - (-3) = (+10) + (+3) = 10 + 3 = +13

4. (-6) - (+9) = (-6) + (-9) = -6 - 9 = -15

5. (+10) - (+1) = (+10) + (-1) = 10 - 1 = +9

6. (-4) - (-4) = (-4) + (+4) = 0

7. (+5) - (+10) = (+5) + (-10) = 5 - 10 = -5

8. (-12) - (+7) = (-12) + (-7) = -12 - 7 = -19

9. (+8) - (+6) = (+8) + (-6) = 8 - 6 = +2

10. 0 - (-9) = 0 + (+9) = 0 + 9 = +9

hope it helps ;)

Answer:

1. +3

6. 0

2. - 4

7. - 5

3. 7

=-19

4. 3

5. 9

10. - 9