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 5a - 9a = -4a - y + 5 for a in terms of y.
| 17y + 4 | |
| \(\frac{8}{9}\)y + \(\frac{5}{9}\) | |
| -\(\frac{5}{6}\)y + \(\frac{1}{18}\) | |
| \(\frac{1}{2}\)y - 1\(\frac{1}{4}\) |