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