Question

(5/2 - 3) : (1 1/2 - 2/3)=

Answer 1

veja...

$( \frac{5}{2} -3)\div(1 \frac{1}{2} - \frac{2}{3} )= \\ \\ ( \frac{5-6}{2} )\div( \frac{3}{2} - \frac{2}{3})= \\ \\ (- \frac{1}{2} )\div( \frac{9-4}{6} )= \\ \\ (- \frac{1}2} )\div( \frac{5}{6} )= \\ \\ (- \frac{1}{\not2} )\times( \frac{\not6^3}{5} )=- \frac{3}{5}$

Answer 2

Quanto que é: 5-[2×-3(1-2×)]=3×-13?