f+3f=4f

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Solution for f+3f=4f equation: 


Simplifying
f + 3f = 4f

Combine like terms: f + 3f = 4f
4f = 4f

Add '-4f' to each side of the equation.
4f + -4f = 4f + -4f

Combine like terms: 4f + -4f = 0
0 = 4f + -4f

Combine like terms: 4f + -4f = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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