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 - 4b = 7b - 2z - 9 for b in terms of z.
| -5z + 7 | |
| -z - 1 | |
| -\(\frac{1}{2}\)z + 2\(\frac{1}{4}\) | |
| -2\(\frac{1}{8}\)z - \(\frac{7}{8}\) |