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