Well, honey, when you add positive 2 and negative 8, you get negative 6. It's like having $2 in your pocket but owing $8 to your friend - you're left with a debt of $6. Math doesn't care about your feelings, it's just here to tell it like it is.
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Minus a negative means you can plus a positive so therefore the answer would be positive 8.
-8
The sum of 7 and -8 is -1.
Negative plus Negative would equal positive in Maths. like this: -7 + -8 = 1 Because you're adding a minus It Will Not Equal a Positive it will Equal a Negative. -7+-8= -15. Because you are adding a negative to another negative. If the problem was -7+8= 1. Because you are taking seven out of that eight. If It were to be multiplication than a negative TIMES a negative would have been a positive(-8 x -7=56). And a negative TIMES a positive would be a negative (-8 x 7=-56).
+8 plus -4 is essentially the same as 8 - 4. Therefore the answer is four.