x-2x=9+x

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Solution for x-2x=9+x equation: 


Simplifying
x + -2x = 9 + x

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

Solving
-1x = 9 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-1x + -1x = 9 + x + -1x

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

Combine like terms: x + -1x = 0
-2x = 9 + 0
-2x = 9

Divide each side by '-2'.
x = -4.5

Simplifying
x = -4.5

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