3x-72+9x=108

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Solution for 3x-72+9x=108 equation:


Simplifying
3x + -72 + 9x = 108

Reorder the terms:
-72 + 3x + 9x = 108

Combine like terms: 3x + 9x = 12x
-72 + 12x = 108

Solving
-72 + 12x = 108

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '72' to each side of the equation.
-72 + 72 + 12x = 108 + 72

Combine like terms: -72 + 72 = 0
0 + 12x = 108 + 72
12x = 108 + 72

Combine like terms: 108 + 72 = 180
12x = 180

Divide each side by '12'.
x = 15

Simplifying
x = 15

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