lilianleon17 lilianleon17

30-10-2016
Mathematics

contestada

use doubles minus one to solve 8´+7

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DivineSolar DivineSolar

30-10-2016

Well we have
8 + 7. The method used would be like thos
8 + 7
~2(-1) + 10 + 7
~-2 + 10 + 7
~8 + 7
Double minus one is this here > (-1) + (-1) = -1 - 1 = -2 = 2(-1)

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