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