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 2c - 8c = -2c - 4y - 9 for c in terms of y.
| -\(\frac{1}{5}\)y + \(\frac{1}{15}\) | |
| -y + \(\frac{1}{5}\) | |
| y - 2\(\frac{1}{4}\) | |
| -y + \(\frac{2}{3}\) |