Solve for P
\left\{\begin{matrix}P=-\frac{n-49}{n_{2}!}\text{, }&n_{2}!\neq 0\\P\in \mathrm{R}\text{, }&n=49\text{ and }n_{2}!=0\end{matrix}\right.
Solve for n
n=-Pn_{2}!+49
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Pn_{2}!=49-n
Subtract n from both sides.
n_{2}!P=49-n
The equation is in standard form.
\frac{n_{2}!P}{n_{2}!}=\frac{49-n}{n_{2}!}
Divide both sides by n_{2}!.
P=\frac{49-n}{n_{2}!}
Dividing by n_{2}! undoes the multiplication by n_{2}!.
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