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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