# Solve the equation or formula for the variable indicated. 10c - f = -13 + cd, for c

Solve the equation or formula for the variable indicated. $10c-f=-13+cd$, for c
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StrycharzT
Subtract cd on both sides.
$10c-f-cd=13+cd-cd$
$10c-f-cd=-13$
$10c-f-cd+f=-13+f$
$10c-cd=f-13$
Use the Distributive Property to factor out c on the left side of the equation
$c\left(10-d\right)=f-13$
Divide both sides by $10-d$.
$c\frac{10-d}{10-d}=\frac{f-13}{10-d}$
$c=\frac{f-13}{10-d}$