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 = 16x
-108 + 16x = 36 + -4x + 4x

Combine like terms: -4x + 4x = 0
-108 + 16x = 36 + 0
-108 + 16x = 36

Add '108' to each side of the equation.
-108 + 108 + 16x = 36 + 108

Combine like terms: -108 + 108 = 0
0 + 16x = 36 + 108
16x = 36 + 108

Combine like terms: 36 + 108 = 144
16x = 144

Divide each side by '16'.
x = 9

Simplifying
x = 9

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