# -5(1-5x)+5(-8x-2)=-4x-8x the answer i got was x=5 , is it right ? How can i plug it back into the equation to show its right? if its wrong please tell me where i went wrong.

Aug 7, 2018

Proof

#### Explanation:

$- 5 + 25 x - 40 x - 10 = - 4 x - 8 x$

After getting rid of parenthesis

$- 15 = - 12 x - 25 x + 40 x$

$- 15 = 40 x - 37 x$

$- 15 = 3 x$

$- \frac{15}{3} = - 5 = x$

Your answer is $x = - 5$