8 minus negative 15 is twenty three.23.you first add negative 15 + 8 and it is 23.that will give you the answer
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Positive 8 i am pretty sure.
-8 - (-13) = - 8 + 13 = +5 ( minus a minus is a plus)
-15 minus -4 is -11.
8 minus negative three or 8--3 equal positive 11. The double negative converts the minus sign into a plus sign and the negative into a positive.
-3 minus -11 is 8.