x-2x=81

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Solution for x-2x=81 equation: 


Simplifying
x + -2x = 81

Combine like terms: x + -2x = -1x
-1x = 81

Solving
-1x = 81

Solving for variable 'x'.

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

Divide each side by '-1'.
x = -81

Simplifying
x = -81

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