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 -3a + 6a = -4a + 9x + 8 for a in terms of x.
| 3x + 8 | |
| x - 4\(\frac{1}{2}\) | |
| 3\(\frac{3}{4}\)x + \(\frac{1}{2}\) | |
| -4\(\frac{1}{3}\)x - \(\frac{1}{3}\) |