Question #0d390

1 Answer
Sep 28, 2017

x=-8

Explanation:

First we will distribute parentheses/brackets: (we're focusing on the left side)

-(9-3x)=-(9)-(-3x) which is equal to -9+3x.

Therefore, the left side would be 4x-9+3x

Group like terms:
4x+3x-9
4x+3x=7x

Equation:
7x-9

Whole equation:
7x-9=8x-1
Add 9 to both sides:
7x-9color(blue)+color(blue)9=8x-1color(blue)+color(blue)9
Simplify:
7x=8x+8
Subtract 8x from both sides:
7xcolor(blue)-color(blue)8color(blue)x=8x+8color(blue)-color(blue)8color(blue)x
Simplify:
-x=8
Divide both sides by -1

(-x)/(-1)=8/(-1)

Answer:
x=-8