How do you solve 9x(5x+5)=5x45?

1 Answer
Sep 28, 2017

x=40

Explanation:

9x(5x+5)=5x45

First, expand the brackets:

9x5x5=5x45

Collect like terms on the left side:

4x5=5x45

Add 5 to both sides:

4x5+5=5x45+5

4x=5x40

Subtract 5x from both sides:

4x5x=5x405x

x=40

Multiply both sides by 1:

x=40