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