f(3)=2x+x

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Solution for f(3)=2x+x equation: 


Simplifying
f(3) = 2x + x

Reorder the terms for easier multiplication:
3f = 2x + x

Combine like terms: 2x + x = 3x
3f = 3x

Solving
3f = 3x

Solving for variable 'f'.

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

Divide each side by '3'.
f = x

Simplifying
f = x

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