Solve for n
n=s+7
Solve for s
s=n-7
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-n=-7-s
Subtract s from both sides.
-n=-s-7
The equation is in standard form.
\frac{-n}{-1}=\frac{-s-7}{-1}
Divide both sides by -1.
n=\frac{-s-7}{-1}
Dividing by -1 undoes the multiplication by -1.
n=s+7
Divide -7-s by -1.
s=-7+n
Add n to both sides.
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