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 8b + 9b = -7b - z - 9 for b in terms of z.
| -2z - 1 | |
| -\(\frac{2}{3}\)z - \(\frac{3}{5}\) | |
| \(\frac{5}{13}\)z - \(\frac{3}{13}\) | |
| 5z + 4 |