Question

qual a raiz da equaçao 1/4.(x+8)-5/4.(x-12)=

Answer 1

$\frac{1}{4} * (x +8)- \frac{5}{4}*(x-12)=0 \\ \\ \frac{x}{4} + \frac{8}{4}- \frac{5x}{4} + \frac{60}{4} \\ \\ \frac{x}{4}- \frac{5x}{4} =- \frac{60}{4} - \frac{8}{4} \\ \\ \frac{-4x}{4} = \frac{-68}{4} \\ \\ -x=-17 (*-1) \\ x=17$

Espero ter ajudado. Paz e luz :)