How do you solve x+3(x+4)=20?

May 31, 2016

You have to expand the equation.

Explanation:

$x + 3 x + 12 = 20$

$4 x + 12 = 20$

$4 x = 20 - 12$

$4 x = 8$

$x = 2$

Hopefully this helps!