Question

Resolva 3 ( 14 -x) + 5 x = - ( x - 48 )

Answer 1

$3\left(14-x\right)+5x=-\left(x-48\right)\\\\42-3x+5x=-\left(x-48\right)\\\\42+2x=-\left(x-48\right)\\\\42+2x=-x+48\\\\42+2x-42=-x+48-42\\\\2x=-x+6\\\\2x+x=-x+6+x\\\\3x=6\\\\\frac{3x}{3}=\frac{6}{3}\\\\x=2$

Answer 2

Resolução:

$3(14-x)+5x=-(x-48)$

$42-3x+5x=-x+48$

$42+2x=-x+48$

$2x+x=48-42$

$3x=6$

$x=\frac{6}{3}$

$x=2$