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 -4a + 7a = -a - x - 4 for a in terms of x.
| -10x + 9 | |
| -\(\frac{1}{6}\)x + \(\frac{2}{3}\) | |
| 2\(\frac{2}{3}\)x + 1\(\frac{1}{3}\) | |
| 4x - 1\(\frac{1}{3}\) |