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 -c + 2c = 7c - 9y - 9 for c in terms of y.
| -\(\frac{1}{2}\)y - \(\frac{2}{5}\) | |
| \(\frac{13}{14}\)y + \(\frac{1}{7}\) | |
| 1\(\frac{3}{8}\)y + 1\(\frac{1}{8}\) | |
| 3y - 1 |