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