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