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 9a - 3a = -2a + 8y - 7 for a in terms of y.
| 1\(\frac{1}{5}\)y + \(\frac{2}{5}\) | |
| y - \(\frac{7}{11}\) | |
| \(\frac{1}{9}\)y - 1 | |
| \(\frac{1}{4}\)y - 1 |