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