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