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 + 9b = -b - z - 7 for b in terms of z.
| \(\frac{4}{5}\)z - \(\frac{2}{5}\) | |
| -2\(\frac{1}{2}\)z - 1\(\frac{3}{4}\) | |
| 3z - 2\(\frac{2}{3}\) | |
| -1\(\frac{1}{2}\)z - \(\frac{5}{6}\) |