Question

como se hace esto 9x+4=5(x+8)

Answer 1

$9x+4=5\left(x+8\right)$
$9x+4=5x+40$
$9x+4-4=5x+40-4$
$9x=5x+36$
$9x-5x=5x+36-5x$
$4x=36$
$\frac{4x}{4}=\frac{36}{4}$
$x=9$

Answer 2

9x+4=5x+40
9x-5x=40-4
4x=36
x=36/4
x=9