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 -4b + 9b = 2b + 7z + 7 for b in terms of z.
| \(\frac{1}{3}\)z - 1\(\frac{1}{6}\) | |
| -\(\frac{11}{12}\)z + \(\frac{2}{3}\) | |
| 1\(\frac{2}{5}\)z - 1\(\frac{4}{5}\) | |
| \(\frac{1}{2}\)z - 4\(\frac{1}{2}\) |