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 5a + 9a = -7a - x - 3 for a in terms of x.
| -\(\frac{1}{3}\)x - 2\(\frac{2}{3}\) | |
| -\(\frac{5}{6}\)x - \(\frac{1}{4}\) | |
| 3x - 3 | |
| -\(\frac{5}{12}\)x + \(\frac{5}{12}\) |