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