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 -a - 4a = 3a - 9x - 3 for a in terms of x.
| 1\(\frac{1}{4}\)x + \(\frac{3}{4}\) | |
| \(\frac{4}{7}\)x - \(\frac{1}{14}\) | |
| \(\frac{1}{4}\)x + \(\frac{1}{2}\) | |
| -\(\frac{4}{5}\)x - 1\(\frac{1}{5}\) |