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 -8c + 8c = 9c - z + 9 for c in terms of z.
| -4z + \(\frac{2}{3}\) | |
| -1\(\frac{6}{7}\)z + \(\frac{4}{7}\) | |
| \(\frac{9}{17}\)z - \(\frac{9}{17}\) | |
| -\(\frac{1}{2}\)z - \(\frac{1}{6}\) |