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