12x-3x-81=144

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Solution for 12x-3x-81=144 equation:


Simplifying
12x + -3x + -81 = 144

Reorder the terms:
-81 + 12x + -3x = 144

Combine like terms: 12x + -3x = 9x
-81 + 9x = 144

Solving
-81 + 9x = 144

Solving for variable 'x'.

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

Add '81' to each side of the equation.
-81 + 81 + 9x = 144 + 81

Combine like terms: -81 + 81 = 0
0 + 9x = 144 + 81
9x = 144 + 81

Combine like terms: 144 + 81 = 225
9x = 225

Divide each side by '9'.
x = 25

Simplifying
x = 25

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