Solve the equation 5x - 3x + 9 - 1 = 4(5) - x.
First we simplify each side of the equation to find that
2x + 8 = 20 - x
Then we add x to each side and subtract 8 from each side to find that
3x = 12
and finally multiply each side of the equation by (or equivalently, divide each side by 3) to find that