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 4a - 9a = -4a - y + 4 for a in terms of y.
| -\(\frac{2}{11}\)y - \(\frac{4}{11}\) | |
| 7\(\frac{1}{2}\)y + 3\(\frac{1}{2}\) | |
| \(\frac{7}{15}\)y + \(\frac{2}{5}\) | |
| y + \(\frac{1}{2}\) |