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