Solve for A
\left\{\begin{matrix}A=\frac{M+S}{F}\text{, }&F\neq 0\\A\in \mathrm{R}\text{, }&S=-M\text{ and }F=0\end{matrix}\right.
Solve for F
\left\{\begin{matrix}F=\frac{M+S}{A}\text{, }&A\neq 0\\F\in \mathrm{R}\text{, }&S=-M\text{ and }A=0\end{matrix}\right.
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FA=M+S
The equation is in standard form.
\frac{FA}{F}=\frac{M+S}{F}
Divide both sides by F.
A=\frac{M+S}{F}
Dividing by F undoes the multiplication by F.
AF=M+S
The equation is in standard form.
\frac{AF}{A}=\frac{M+S}{A}
Divide both sides by A.
F=\frac{M+S}{A}
Dividing by A undoes the multiplication by A.
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