12x-81=4x+135

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Solution for 12x-81=4x+135 equation:


Simplifying
12x + -81 = 4x + 135

Reorder the terms:
-81 + 12x = 4x + 135

Reorder the terms:
-81 + 12x = 135 + 4x

Solving
-81 + 12x = 135 + 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.
-81 + 12x + -4x = 135 + 4x + -4x

Combine like terms: 12x + -4x = 8x
-81 + 8x = 135 + 4x + -4x

Combine like terms: 4x + -4x = 0
-81 + 8x = 135 + 0
-81 + 8x = 135

Add '81' to each side of the equation.
-81 + 81 + 8x = 135 + 81

Combine like terms: -81 + 81 = 0
0 + 8x = 135 + 81
8x = 135 + 81

Combine like terms: 135 + 81 = 216
8x = 216

Divide each side by '8'.
x = 27

Simplifying
x = 27

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