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 - 4c = 4c + 5z + 4 for c in terms of z.
| 8\(\frac{1}{2}\)z - 1\(\frac{1}{2}\) | |
| -\(\frac{1}{3}\)z + \(\frac{5}{6}\) | |
| -\(\frac{9}{13}\)z - \(\frac{4}{13}\) | |
| -14z + 2 |