-x-2x=9

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Solution for -x-2x=9 equation: 


Simplifying
-1x + -2x = 9

Combine like terms: -1x + -2x = -3x
-3x = 9

Solving
-3x = 9

Solving for variable 'x'.

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

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

Simplifying
x = -3

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