Solve for m
m=\frac{n+4}{2}
Solve for n
n=2\left(m-2\right)
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2m+3=n+7
Swap sides so that all variable terms are on the left hand side.
2m=n+7-3
Subtract 3 from both sides.
2m=n+4
Subtract 3 from 7 to get 4.
\frac{2m}{2}=\frac{n+4}{2}
Divide both sides by 2.
m=\frac{n+4}{2}
Dividing by 2 undoes the multiplication by 2.
m=\frac{n}{2}+2
Divide n+4 by 2.
n=2m+3-7
Subtract 7 from both sides.
n=2m-4
Subtract 7 from 3 to get -4.
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