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 -7c - 5c = 4c - 4z - 1 for c in terms of z.
| -\(\frac{1}{11}\)z + \(\frac{1}{11}\) | |
| \(\frac{4}{9}\)z + \(\frac{7}{9}\) | |
| 1\(\frac{4}{5}\)z + 1 | |
| -\(\frac{1}{6}\)z - 1 |