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 8c + 5c = 4c + 9y - 2 for c in terms of y.
| -7y + 7 | |
| y - \(\frac{1}{2}\) | |
| -1\(\frac{1}{12}\)y - \(\frac{1}{2}\) | |
| -9y + 8 |