9x-81=12x

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Solution for 9x-81=12x equation:


Simplifying
9x + -81 = 12x

Reorder the terms:
-81 + 9x = 12x

Solving
-81 + 9x = 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.
-81 + 9x + -12x = 12x + -12x

Combine like terms: 9x + -12x = -3x
-81 + -3x = 12x + -12x

Combine like terms: 12x + -12x = 0
-81 + -3x = 0

Add '81' to each side of the equation.
-81 + 81 + -3x = 0 + 81

Combine like terms: -81 + 81 = 0
0 + -3x = 0 + 81
-3x = 0 + 81

Combine like terms: 0 + 81 = 81
-3x = 81

Divide each side by '-3'.
x = -27

Simplifying
x = -27

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