x+4x-9x=-12

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Solution for x+4x-9x=-12 equation: 


Simplifying
x + 4x + -9x = -12

Combine like terms: x + 4x = 5x
5x + -9x = -12

Combine like terms: 5x + -9x = -4x
-4x = -12

Solving
-4x = -12

Solving for variable 'x'.

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

Divide each side by '-4'.
x = 3

Simplifying
x = 3

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