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 + 2c = 2c + 8z - 2 for c in terms of z.
| 2\(\frac{1}{4}\)z - 2\(\frac{1}{4}\) | |
| 2\(\frac{1}{8}\)z - \(\frac{3}{4}\) | |
| \(\frac{6}{7}\)z - \(\frac{2}{7}\) | |
| 9z - 9 |