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When is 20 plus 20 not 40?

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Anonymous

∙ 13y ago
Updated: 8/19/2019

20 + 20 = 40 is not 40 when either one of the two terms is a negative or both.

-20 + 20 = 0 and -20 + -20 = -40

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Wiki User

∙ 13y ago
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