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-1+-1=0

I'm just improving but actually a negative plus a negative is a negative, therefore -1+(-1)=-2

and you cant have to signs touching so the second negative one should be in parenthesis. and i believe the answer to your question is an opposite.

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Wiki User

11y ago

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hi

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Anonymous

4y ago
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Q: What are Two numbers whose sum is equal to zero?
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