f+x=g

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Solution for f+x=g equation: 


Simplifying
f + x = g

Solving
f + x = g

Solving for variable 'f'.

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

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

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

Simplifying
f = g + -1x

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