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 - 6a = a + 4x - 9 for a in terms of x.
| -x + 1 | |
| 6x - 2 | |
| 1\(\frac{1}{4}\)x - 1\(\frac{1}{8}\) | |
| 11x + 8 |