-x=2x-90

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Solution for -x=2x-90 equation: 


Simplifying
-1x = 2x + -90

Reorder the terms:
-1x = -90 + 2x

Solving
-1x = -90 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-1x + -2x = -90 + 2x + -2x

Combine like terms: -1x + -2x = -3x
-3x = -90 + 2x + -2x

Combine like terms: 2x + -2x = 0
-3x = -90 + 0
-3x = -90

Divide each side by '-3'.
x = 30

Simplifying
x = 30

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