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 - 2a = 9a - 8z - 1 for a in terms of z.
| -\(\frac{9}{10}\)z - \(\frac{9}{10}\) | |
| \(\frac{10}{17}\)z - \(\frac{8}{17}\) | |
| 1\(\frac{1}{2}\)z + \(\frac{1}{4}\) | |
| z - \(\frac{8}{17}\) |