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 + 3a = -7a - y + 9 for a in terms of y.
| 1\(\frac{1}{2}\)y - 1 | |
| -5y + 9 | |
| -\(\frac{4}{11}\)y + \(\frac{9}{11}\) | |
| 4y + 6 |