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 5c + 3c = -9c - 9y + 8 for c in terms of y.
| -y + 7 | |
| -\(\frac{6}{7}\)y + \(\frac{4}{7}\) | |
| -\(\frac{1}{8}\)y - \(\frac{1}{8}\) | |
| y - \(\frac{8}{13}\) |