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 + a = 8a + 7y + 9 for a in terms of y.
| -\(\frac{1}{3}\)y + \(\frac{1}{3}\) | |
| 6y + 9 | |
| 7y + 5 | |
| 5y - 3 |