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 -5b - 7b = 8b - 2z - 9 for b in terms of z.
| \(\frac{8}{11}\)z - \(\frac{8}{11}\) | |
| -\(\frac{5}{13}\)z + \(\frac{9}{13}\) | |
| -\(\frac{1}{2}\)z + \(\frac{1}{6}\) | |
| \(\frac{1}{2}\)z + \(\frac{1}{4}\) |