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