Solve for a
\left\{\begin{matrix}a=\frac{p}{2d}\text{, }&d\neq 0\\a\in \mathrm{R}\text{, }&p=0\text{ and }d=0\end{matrix}\right.
Solve for d
\left\{\begin{matrix}d=\frac{p}{2a}\text{, }&a\neq 0\\d\in \mathrm{R}\text{, }&p=0\text{ and }a=0\end{matrix}\right.
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2ad=p
Swap sides so that all variable terms are on the left hand side.
2da=p
The equation is in standard form.
\frac{2da}{2d}=\frac{p}{2d}
Divide both sides by 2d.
a=\frac{p}{2d}
Dividing by 2d undoes the multiplication by 2d.
2ad=p
Swap sides so that all variable terms are on the left hand side.
\frac{2ad}{2a}=\frac{p}{2a}
Divide both sides by 2a.
d=\frac{p}{2a}
Dividing by 2a undoes the multiplication by 2a.
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