Question

Calculando x = (-1/2)+(-1/3)+(-1/4), obtemos:

Answer 1

$x=( \frac{-1}{2} )+( \frac{-1}{3} )+( \frac{-1}{4} ) \\\\mmc=12 \\\\ x= \frac{-6+(-4)+(-3)}{12} \\ \\ x= \frac{-6-4-3}{12} \to \\\\ x=\frac{-13}{12}$