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 - 7b = -b + 8z + 4 for b in terms of z.
| 8z - 5 | |
| \(\frac{1}{2}\)z + \(\frac{1}{2}\) | |
| -\(\frac{1}{8}\)z + 1 | |
| 15z + 4 |