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 - a = 2a - 5z - 1 for a in terms of z.
| -\(\frac{2}{3}\)z - \(\frac{1}{6}\) | |
| -\(\frac{7}{12}\)z + \(\frac{1}{3}\) | |
| \(\frac{5}{9}\)z + \(\frac{2}{3}\) | |
| -\(\frac{1}{14}\)z + \(\frac{9}{14}\) |