Solve for L
\left\{\begin{matrix}L=\frac{A}{w}\text{, }&w\neq 0\\L\in \mathrm{R}\text{, }&A=0\text{ and }w=0\end{matrix}\right.
Solve for A
A=Lw
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Lw=A
Swap sides so that all variable terms are on the left hand side.
wL=A
The equation is in standard form.
\frac{wL}{w}=\frac{A}{w}
Divide both sides by w.
L=\frac{A}{w}
Dividing by w undoes the multiplication by w.
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