x+3x-9x=45

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Solution for x+3x-9x=45 equation: 


Simplifying
x + 3x + -9x = 45

Combine like terms: x + 3x = 4x
4x + -9x = 45

Combine like terms: 4x + -9x = -5x
-5x = 45

Solving
-5x = 45

Solving for variable 'x'.

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

Divide each side by '-5'.
x = -9

Simplifying
x = -9

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