Solve for f
f=4-\frac{3}{x}
x\neq 0
Solve for x
x=-\frac{3}{f-4}
f\neq 4
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xf=4x-3
The equation is in standard form.
\frac{xf}{x}=\frac{4x-3}{x}
Divide both sides by x.
f=\frac{4x-3}{x}
Dividing by x undoes the multiplication by x.
f=4-\frac{3}{x}
Divide 4x-3 by x.
fx-4x=-3
Subtract 4x from both sides.
\left(f-4\right)x=-3
Combine all terms containing x.
\frac{\left(f-4\right)x}{f-4}=-\frac{3}{f-4}
Divide both sides by f-4.
x=-\frac{3}{f-4}
Dividing by f-4 undoes the multiplication by f-4.
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