Question

$\frac{3}{4} \times 2 - 4( - \frac{1}{2} - 1.8 =$
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Answer 1

Respuesta:

$\frac{3}{4}\cdot \:2-4\left(-\frac{1}{2}-\frac{1}{8}\right)\\\\\frac{3}{2}-\left(-\frac{5}{2}\right)\\\\\mathrm{Aplicar\:la\:regla}\:-\left(-a\right)=a\\\\\frac{3}{2}+\frac{5}{2}\\\\\mathrm{Ya\:que\:los\:denominadores\:son\:iguales,\:combinar\:las\:fracciones}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}\\\\\frac{3+5}{2}\\\\\frac{8}{2}\\\\\mathrm{Dividir:}\:\frac{8}{2}=4\\\\=4$

Explicación: