12(x-9)=4(x-9)

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Solution for 12(x-9)=4(x-9) equation:


Simplifying
12(x + -9) = 4(x + -9)

Reorder the terms:
12(-9 + x) = 4(x + -9)
(-9 * 12 + x * 12) = 4(x + -9)
(-108 + 12x) = 4(x + -9)

Reorder the terms:
-108 + 12x = 4(-9 + x)
-108 + 12x = (-9 * 4 + x * 4)
-108 + 12x = (-36 + 4x)

Solving
-108 + 12x = -36 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-108 + 12x + -4x = -36 + 4x + -4x

Combine like terms: 12x + -4x = 8x
-108 + 8x = -36 + 4x + -4x

Combine like terms: 4x + -4x = 0
-108 + 8x = -36 + 0
-108 + 8x = -36

Add '108' to each side of the equation.
-108 + 108 + 8x = -36 + 108

Combine like terms: -108 + 108 = 0
0 + 8x = -36 + 108
8x = -36 + 108

Combine like terms: -36 + 108 = 72
8x = 72

Divide each side by '8'.
x = 9

Simplifying
x = 9

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