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 4c - 6c = 3c + 3y + 9 for c in terms of y.
| 9y + 9 | |
| \(\frac{3}{7}\)y - \(\frac{4}{7}\) | |
| y + \(\frac{2}{5}\) | |
| -13y + 3 |