Solve for h
h=\frac{m-15}{6}
Solve for m
m=6h+15
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6h+15=m
Swap sides so that all variable terms are on the left hand side.
6h=m-15
Subtract 15 from both sides.
\frac{6h}{6}=\frac{m-15}{6}
Divide both sides by 6.
h=\frac{m-15}{6}
Dividing by 6 undoes the multiplication by 6.
h=\frac{m}{6}-\frac{5}{2}
Divide m-15 by 6.
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