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 - 3b = 5b - 8z - 7 for b in terms of z.
| -\(\frac{4}{15}\)z + \(\frac{1}{5}\) | |
| \(\frac{5}{14}\)z + \(\frac{1}{2}\) | |
| -3\(\frac{2}{3}\)z + \(\frac{2}{3}\) | |
| z - 1\(\frac{1}{4}\) |