fx=f-x

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Solution for fx=f-x equation: 


Simplifying
fx = f + -1x

Solving
fx = f + -1x

Solving for variable 'f'.

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

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

Combine like terms: f + -1f = 0
-1f + fx = 0 + -1x
-1f + fx = -1x

Combine like terms: -1x + x = 0
-1f + fx + x = 0

The solution to this equation could not be determined.

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