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