How do you solve 9x - ( 5x + 5) = 5x - 45?

1 Answer
Sep 28, 2017

x=40

Explanation:

9x-(5x+5)=5x-45

First, expand the brackets:

9x-5x-5=5x-45

Collect like terms on the left side:

4x-5=5x-45

Add 5 to both sides:

4x-5+5=5x-45+5

4x=5x-40

Subtract 5x from both sides:

4x-5x=5x-40-5x

-x=-40

Multiply both sides by -1:

x=40