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 = -9c + 7y - 5 for c in terms of y.
| -5y + 7 | |
| \(\frac{1}{3}\)y - \(\frac{5}{9}\) | |
| 2\(\frac{3}{5}\)y - 1 | |
| -4y - 4\(\frac{1}{2}\) |