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 -9b - 9b = b - 7z - 4 for b in terms of z.
| -1\(\frac{1}{12}\)z + \(\frac{2}{3}\) | |
| -\(\frac{1}{3}\)z + \(\frac{2}{3}\) | |
| -\(\frac{1}{5}\)z + \(\frac{2}{5}\) | |
| -\(\frac{3}{7}\)z - \(\frac{4}{7}\) |