Question

ayuda plz es para hoy​

Answer 1

Explicación paso a paso:

$A)\\+\cfrac{1}{4}x&=-8\\\left(+\cfrac{1}{4}x\right)\left(+4\right)&=\left(-8\right)\left(+4\right)\\+x&=-32\\\\B)\\+\cfrac{2}{3}-x&=+7\\+\cfrac{2}{3}-x-\cfrac{2}{3}&=+7-\cfrac{2}{3}\\-x&=+\cfrac{21}{3}-\cfrac{2}{3}\\-x&=+\cfrac{19}{3}\\\left(-x\right)\left(-1\right)&=\left(+\cfrac{19}{3}\right)\left(-1\right)\\+x&=-\cfrac{19}{3}\\\\\\C)\\\cfrac{x}{3}&=-6\\\left(\cfrac{x}{3}\right)\left(+3\right)&=\left(-6\right)\left(+3\right)\\+x&=-18$