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 -8a + a = 2a + 3x + 9 for a in terms of x.
| -\(\frac{1}{8}\)x + \(\frac{1}{2}\) | |
| -\(\frac{1}{5}\)x - \(\frac{9}{10}\) | |
| 1\(\frac{2}{3}\)x - 3 | |
| -1\(\frac{1}{3}\)x - 1\(\frac{1}{3}\) |