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 - a = 5a + 3x + 8 for a in terms of x.
| 1\(\frac{2}{3}\)x - 2\(\frac{1}{3}\) | |
| -\(\frac{2}{7}\)x - \(\frac{4}{7}\) | |
| \(\frac{1}{12}\)x + \(\frac{2}{3}\) | |
| \(\frac{7}{12}\)x - \(\frac{2}{3}\) |