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 = 3a + 6x - 7 for a in terms of x.
| -5x - 2 | |
| -\(\frac{1}{3}\)x + \(\frac{7}{12}\) | |
| 3\(\frac{2}{3}\)x - 2 | |
| \(\frac{1}{2}\)x - 3 |