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 = 7b + 3z - 9 for b in terms of z.
| -1\(\frac{3}{5}\)z - 1\(\frac{4}{5}\) | |
| -\(\frac{1}{16}\)z - \(\frac{9}{16}\) | |
| \(\frac{2}{3}\)z + 1\(\frac{1}{2}\) | |
| 3z + 4 |