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 9c - 9c = 2c + 3z - 4 for c in terms of z.
| -\(\frac{4}{7}\)z - \(\frac{1}{7}\) | |
| 1\(\frac{5}{7}\)z - \(\frac{4}{7}\) | |
| \(\frac{1}{2}\)z - \(\frac{5}{18}\) | |
| -1\(\frac{2}{9}\)z - 1 |