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 -3b - 6b = -b - 4z - 9 for b in terms of z.
| -\(\frac{3}{4}\)z - 1 | |
| -z + 4\(\frac{1}{2}\) | |
| 3\(\frac{1}{2}\)z + 4\(\frac{1}{2}\) | |
| z - 5 |