# Solve the equation or formula for the variable indicated. 10c - f = -13 + cd, for c Question
Equations Solve the equation or formula for the variable indicated. $$10c - f = -13 + cd$$, for c 2021-01-25
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
$$c(10-d)=f-13$$
Divide both sides by $$10-d$$.
$$c\frac{10-d}{10-d}=\frac{f-13}{10-d}$$
$$c=\frac{f-13}{10-d}$$

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