fx=x*3+-4*x

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Solution for fx=x*3+-4*x equation: 


Simplifying
fx = x * 3 + -4x

Reorder the terms for easier multiplication:
fx = 3x + -4x

Combine like terms: 3x + -4x = -1x
fx = -1x

Solving
fx = -1x

Solving for variable 'f'.

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

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

Simplifying
f = -1

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