12x-216=3x-9

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Solution for 12x-216=3x-9 equation:


Simplifying
12x + -216 = 3x + -9

Reorder the terms:
-216 + 12x = 3x + -9

Reorder the terms:
-216 + 12x = -9 + 3x

Solving
-216 + 12x = -9 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-216 + 12x + -3x = -9 + 3x + -3x

Combine like terms: 12x + -3x = 9x
-216 + 9x = -9 + 3x + -3x

Combine like terms: 3x + -3x = 0
-216 + 9x = -9 + 0
-216 + 9x = -9

Add '216' to each side of the equation.
-216 + 216 + 9x = -9 + 216

Combine like terms: -216 + 216 = 0
0 + 9x = -9 + 216
9x = -9 + 216

Combine like terms: -9 + 216 = 207
9x = 207

Divide each side by '9'.
x = 23

Simplifying
x = 23

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