Solve for d (complex solution)
\left\{\begin{matrix}d=\frac{C}{7\pi m}\text{, }&m\neq 0\\d\in \mathrm{C}\text{, }&C=0\text{ and }m=0\end{matrix}\right.
Solve for d
\left\{\begin{matrix}d=\frac{C}{7\pi m}\text{, }&m\neq 0\\d\in \mathrm{R}\text{, }&C=0\text{ and }m=0\end{matrix}\right.
Solve for C
C=7\pi dm
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7\pi md=C
Swap sides so that all variable terms are on the left hand side.
\frac{7\pi md}{7\pi m}=\frac{C}{7\pi m}
Divide both sides by 7\pi m.
d=\frac{C}{7\pi m}
Dividing by 7\pi m undoes the multiplication by 7\pi m.
7\pi md=C
Swap sides so that all variable terms are on the left hand side.
\frac{7\pi md}{7\pi m}=\frac{C}{7\pi m}
Divide both sides by 7\pi m.
d=\frac{C}{7\pi m}
Dividing by 7\pi m undoes the multiplication by 7\pi m.
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