Answer:
Explanation:
In integer subtraction, find the additive inverse of the second number and then add.
Here additive inverse of (-3) is 3.
-8 - (-3) = -8 + 3
= (-5)
If two numbers are opposite sign, subtract and the result will have the sign of the bigger number. Here the sign of bigger number (8) is negative.
7- (-8)
Here additive inverse of (-8) is 8
7 - (-8) = 7 + 8 = 15