Solve for I
\left\{\begin{matrix}I=\frac{V}{bh}\text{, }&h\neq 0\text{ and }b\neq 0\\I\in \mathrm{R}\text{, }&\left(h=0\text{ or }b=0\right)\text{ and }V=0\end{matrix}\right.
Solve for V
V=Ibh
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Ibh=V
Swap sides so that all variable terms are on the left hand side.
bhI=V
The equation is in standard form.
\frac{bhI}{bh}=\frac{V}{bh}
Divide both sides by bh.
I=\frac{V}{bh}
Dividing by bh undoes the multiplication by bh.
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