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 -b + 2b = 7b + 9z - 1 for b in terms of z.
| -1\(\frac{1}{2}\)z + 3\(\frac{1}{2}\) | |
| \(\frac{1}{3}\)z + 1\(\frac{2}{3}\) | |
| -\(\frac{7}{8}\)z + \(\frac{1}{8}\) | |
| 2z + 4 |