-3x-9x=144

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Solution for -3x-9x=144 equation: 


Simplifying
-3x + -9x = 144

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

Solving
-12x = 144

Solving for variable 'x'.

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

Divide each side by '-12'.
x = -12

Simplifying
x = -12

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