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 - 8a = 2a + 2z - 2 for a in terms of z.
| -z + 1\(\frac{2}{7}\) | |
| -3\(\frac{1}{4}\)z - 2 | |
| -\(\frac{4}{9}\)z - \(\frac{5}{9}\) | |
| 5z - 1 |