Solve for h
h=\frac{c-25}{7}
Solve for c
c=7h+25
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25+7h=c
Swap sides so that all variable terms are on the left hand side.
7h=c-25
Subtract 25 from both sides.
\frac{7h}{7}=\frac{c-25}{7}
Divide both sides by 7.
h=\frac{c-25}{7}
Dividing by 7 undoes the multiplication by 7.
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