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