Answer:
x = 3
Explanation:
9x - 4 ( x - 2 ) = x + 20
First, solve the brackets.
9x - 4x + 8 = x + 20
Combine like terms.
5x + 8 = x + 20
Now, subtract x by both sides.
5x - x + 8 = 20
4x + 8 = 20
Then, subtract 8 by both sides.
4x = 20 - 8
4x = 12
Divide both sides by 4.
x = 3