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