Answers:
-100 + (-100) = -200
-100 + 200 = 100 (positive integer is bigger than negative)
-200 + 100 = -100 (negative integer is bigger than positive)
if both are negative then you add them if both are positive then you add them
If one is positive and one is negative then they are subtracted
the sign of the number that is bigger is the products sign
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