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 9a - 4a = -3a + 5z - 9 for a in terms of z.
| -\(\frac{5}{11}\)z - \(\frac{8}{11}\) | |
| \(\frac{3}{4}\)z - \(\frac{3}{4}\) | |
| 4z - 6 | |
| -2z - 6 |