When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve 3c + 7c = -9c - 9y - 5 for c in terms of y.
8\(\frac{1}{2}\)y + 3 | |
-5\(\frac{1}{2}\)y - 3\(\frac{1}{2}\) | |
\(\frac{10}{13}\)y - \(\frac{2}{13}\) | |
-1\(\frac{1}{3}\)y - \(\frac{5}{12}\) |