SOLUTION: I need help with this problem, can someone respond? Find the opposite, or additive inverse, of 28

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Question 456746: I need help with this problem, can someone respond?
Find the opposite, or additive inverse, of 28
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!

The "additive inverse" of a number which when added to the number yields zero.
so, additive inverse of 28 is -28
because
28 + (-28) = 0