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