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 8a - 8a = -9a + 5x - 4 for a in terms of x.
| -5x + 5 | |
| \(\frac{13}{17}\)x - \(\frac{4}{17}\) | |
| 2\(\frac{1}{8}\)x + \(\frac{5}{8}\) | |
| -1\(\frac{2}{9}\)x + \(\frac{4}{9}\) |