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 + 7b = 4b - 8z - 9 for b in terms of z.
| \(\frac{9}{13}\)z - \(\frac{1}{13}\) | |
| \(\frac{1}{18}\)z - \(\frac{7}{18}\) | |
| 2\(\frac{1}{2}\)z + 1\(\frac{1}{2}\) | |
| 3z + 3 |