135=12x-9

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Solution for 135=12x-9 equation:


Simplifying
135 = 12x + -9

Reorder the terms:
135 = -9 + 12x

Solving
135 = -9 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
135 + -12x = -9 + 12x + -12x

Combine like terms: 12x + -12x = 0
135 + -12x = -9 + 0
135 + -12x = -9

Add '-135' to each side of the equation.
135 + -135 + -12x = -9 + -135

Combine like terms: 135 + -135 = 0
0 + -12x = -9 + -135
-12x = -9 + -135

Combine like terms: -9 + -135 = -144
-12x = -144

Divide each side by '-12'.
x = 12

Simplifying
x = 12

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