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 2b + 6b = b + 8z + 9 for b in terms of z.
| -z + \(\frac{3}{5}\) | |
| 7z + 2\(\frac{1}{2}\) | |
| 9z + 2 | |
| 2z + 9 |