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