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