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