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 -b + 7b = 3b - 5z - 8 for b in terms of z.
| 3z + 2 | |
| -1\(\frac{2}{5}\)z + \(\frac{1}{5}\) | |
| z - \(\frac{5}{8}\) | |
| \(\frac{6}{13}\)z + \(\frac{4}{13}\) |