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 -3c + 4c = -9c + 4y - 4 for c in terms of y.
| y - \(\frac{2}{3}\) | |
| \(\frac{3}{7}\)y + \(\frac{6}{7}\) | |
| 2y - 1\(\frac{4}{5}\) | |
| -7y + 2 |