f(x)=1+3x

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Solution for f(x)=1+3x equation: 


Simplifying
f(x) = 1 + 3x

Multiply f * x
fx = 1 + 3x

Solving
fx = 1 + 3x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = x-1 + 3

Simplifying
f = x-1 + 3

Reorder the terms:
f = 3 + x-1

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