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 9a - 7a = 5a - 4x - 8 for a in terms of x.
| \(\frac{1}{8}\)x - \(\frac{7}{8}\) | |
| -2\(\frac{3}{7}\)x - \(\frac{6}{7}\) | |
| \(\frac{3}{4}\)x - 2 | |
| x + \(\frac{1}{2}\) |