Simplifying
4x + 12 + -1x = -15
Reorder the terms:
12 + 4x + -1x = -15
Combine like terms: 4x + -1x = 3x
12 + 3x = -15
Solving
12 + 3x = -15
Solving for the variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-12' to each side of the equation.
12 + -12 + 3x = -15 + -12
Combine like terms: 12 + -12 = 0
0 + 3x = -15 + -12
3x = -15 + -12
Combine like terms: -15 + -12 = -27
3x = -27
Divide each side by '3'.
x = -9
Simplifying
x = -9
Skandar
