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 9b + 9b = -4b - 8z - 4 for b in terms of z.
| 4z - \(\frac{1}{2}\) | |
| -1\(\frac{4}{13}\)z - \(\frac{4}{13}\) | |
| 3\(\frac{1}{2}\)z + 4\(\frac{1}{2}\) | |
| -\(\frac{1}{9}\)z + \(\frac{1}{9}\) |