Solve for r (complex solution)
\left\{\begin{matrix}r=\frac{M}{\pi s}\text{, }&s\neq 0\\r\in \mathrm{C}\text{, }&M=0\text{ and }s=0\end{matrix}\right.
Solve for r
\left\{\begin{matrix}r=\frac{M}{\pi s}\text{, }&s\neq 0\\r\in \mathrm{R}\text{, }&M=0\text{ and }s=0\end{matrix}\right.
Solve for M
M=\pi rs
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\pi rs=M
Swap sides so that all variable terms are on the left hand side.
\pi sr=M
The equation is in standard form.
\frac{\pi sr}{\pi s}=\frac{M}{\pi s}
Divide both sides by \pi s.
r=\frac{M}{\pi s}
Dividing by \pi s undoes the multiplication by \pi s.
\pi rs=M
Swap sides so that all variable terms are on the left hand side.
\pi sr=M
The equation is in standard form.
\frac{\pi sr}{\pi s}=\frac{M}{\pi s}
Divide both sides by \pi s.
r=\frac{M}{\pi s}
Dividing by \pi s undoes the multiplication by \pi s.
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