Solve for P
\left\{\begin{matrix}P=\frac{Rs_{2135}}{S}\text{, }&S\neq 0\\P\in \mathrm{R}\text{, }&\left(R=0\text{ or }s_{2135}=0\right)\text{ and }S=0\end{matrix}\right.
Solve for R
\left\{\begin{matrix}R=\frac{PS}{s_{2135}}\text{, }&s_{2135}\neq 0\\R\in \mathrm{R}\text{, }&\left(S=0\text{ or }P=0\right)\text{ and }s_{2135}=0\end{matrix}\right.
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SP=Rs_{2135}
The equation is in standard form.
\frac{SP}{S}=\frac{Rs_{2135}}{S}
Divide both sides by S.
P=\frac{Rs_{2135}}{S}
Dividing by S undoes the multiplication by S.
Rs_{2135}=SP
Swap sides so that all variable terms are on the left hand side.
s_{2135}R=PS
The equation is in standard form.
\frac{s_{2135}R}{s_{2135}}=\frac{PS}{s_{2135}}
Divide both sides by s_{2135}.
R=\frac{PS}{s_{2135}}
Dividing by s_{2135} undoes the multiplication by s_{2135}.
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