Can anyone explain in words why minus one times minus one equals plus one please?

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- Nov 6th 2008, 06:15 AMHamilton SmytheMinus problems
Can anyone explain in words why minus one times minus one equals plus one please?

- Nov 6th 2008, 09:34 AMmasters
Maybe this will help you understand:

Negative and non-negative numbers - Wikipedia, the free encyclopedia - Nov 6th 2008, 11:42 AMLaurent