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 - 2a = -4a + 7z + 8 for a in terms of z.
| 9\(\frac{1}{2}\)z - 3 | |
| 10z - 4 | |
| 1\(\frac{4}{5}\)z + 1\(\frac{3}{5}\) | |
| z - \(\frac{2}{7}\) |