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 + 4a = -9a - 9z - 9 for a in terms of z.
| \(\frac{8}{13}\)z - \(\frac{5}{13}\) | |
| -z - \(\frac{9}{13}\) | |
| 10z + 9 | |
| \(\frac{4}{7}\)z + \(\frac{4}{7}\) |