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 2b + 2b = 9b + 4z + 4 for b in terms of z.
| 1\(\frac{3}{8}\)z + \(\frac{1}{4}\) | |
| \(\frac{1}{9}\)z + \(\frac{7}{9}\) | |
| -\(\frac{7}{13}\)z + \(\frac{2}{13}\) | |
| -\(\frac{2}{7}\)z - \(\frac{4}{7}\) |