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 3c - 9c = 8c + 8z - 9 for c in terms of z.
| 1\(\frac{1}{2}\)z - \(\frac{1}{4}\) | |
| -3\(\frac{2}{5}\)z + 1\(\frac{4}{5}\) | |
| -2z - 3 | |
| 5z + 2 |