Answer:
Simplifying
18 = 3(3x + -6)
Reorder the terms:
18 = 3(-6 + 3x)
18 = (-6 * 3 + 3x * 3)
18 = (-18 + 9x)
Solving
18 = -18 + 9x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9x' to each side of the equation.
18 + -9x = -18 + 9x + -9x
Combine like terms: 9x + -9x = 0
18 + -9x = -18 + 0
18 + -9x = -18
Add '-18' to each side of the equation.
18 + -18 + -9x = -18 + -18
Combine like terms: 18 + -18 = 0
0 + -9x = -18 + -18
-9x = -18 + -18
Combine like terms: -18 + -18 = -36
-9x = -36
Divide each side by '-9'.
x = 4
Simplifying
x = 4
Step-by-step explanation:
