HOW?

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How can a-(1+a) be -1?

Guest Sep 5, 2013

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2⁺⁰ Answers

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-1=a-(1+a)
-1-a=1+a
-1=1+2a
-2=2a
-1=a

Guest Sep 5, 2013

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Actually -1 = a-(1+a) = a-1-a =(a-a)-1 = -1

Guest Sep 5, 2013

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