<span>Simplifying
13 + 4x = 1 + -1x
Solving
13 + 4x = 1 + -1x
Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add 'x' to each side of the equation.13 + 4x + x = 1 + -1x + x
Combine like terms: 4x + x = 5x
13 + 5x = 1 + -1x + x
Combine like terms: -1x + x = 0
13 + 5x = 1 + 0
13 + 5x = 1
Add '-13' to each side of the equation.
13 + -13 + 5x = 1 + -13
Combine like terms: 13 + -13 = 0 0 + 5x = 1 + -13
5x = 1 + -13
Combine like terms: 1 + -13 = -12
5x = -12
Divide each side by '5'.
x = -2.4
Simplifying
x = -2.4</span>