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 - a = 9a + 2z - 8 for a in terms of z.
| -\(\frac{3}{8}\)z + \(\frac{1}{4}\) | |
| \(\frac{1}{8}\)z + \(\frac{1}{8}\) | |
| -3\(\frac{1}{3}\)z - \(\frac{2}{3}\) | |
| -\(\frac{3}{14}\)z + \(\frac{4}{7}\) |