f(x+4)=3x-9x

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Solution for f(x+4)=3x-9x equation: 


Simplifying
f(x + 4) = 3x + -9x

Reorder the terms:
f(4 + x) = 3x + -9x
(4 * f + x * f) = 3x + -9x
(4f + fx) = 3x + -9x

Combine like terms: 3x + -9x = -6x
4f + fx = -6x

Solving
4f + fx = -6x

Solving for variable 'f'.

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

Combine like terms: -6x + 6x = 0
4f + fx + 6x = 0

The solution to this equation could not be determined.

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