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