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 + 4a = 9a + 9x - 9 for a in terms of x.
| -\(\frac{2}{3}\)x - \(\frac{1}{2}\) | |
| x + \(\frac{1}{2}\) | |
| -\(\frac{5}{14}\)x + \(\frac{9}{14}\) | |
| -\(\frac{5}{16}\)x - \(\frac{1}{4}\) |