Question

(2/3 - 1/6 -1) * [-2- (-5 +7/2)]*(-5-7)

Answer 1

Resposta:

$({2\over3}-{1\over6}-1)\times[-2-(-5+{7\over2})]\times(-5-7)=\\ \\ ({4-1-6\over6})\times[-2-({-10+7\over2})]\times(-12)=\\ \\({4-7\over6})\times[-2-(-{3\over2})]\times(-12)=\\ \\ (-{3\over6})\times[-2+{3\over2}]\times(-12)=\\ \\ (-{3\over6})\times[{-4+3\over2}]\times(-12)=\\ \\ (-{3\over6})\times(-{1\over2})\times(-12)=$

$-{36\over12}=\fbox{ -3 }$