Solve for b
b=\frac{4}{F}
F\neq 0
Solve for F
F=\frac{4}{b}
b\neq 0
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Fb=4
Variable b cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by b.
\frac{Fb}{F}=\frac{4}{F}
Divide both sides by F.
b=\frac{4}{F}
Dividing by F undoes the multiplication by F.
b=\frac{4}{F}\text{, }b\neq 0
Variable b cannot be equal to 0.
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