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 - 7a = -8a + 5x - 8 for a in terms of x.
| -5x - 1 | |
| -1\(\frac{1}{2}\)x + \(\frac{5}{8}\) | |
| \(\frac{3}{4}\)x - \(\frac{1}{2}\) | |
| 1\(\frac{5}{7}\)x + \(\frac{3}{7}\) |