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 - 3c = 2c - 6z + 4 for c in terms of z.
| -4z - 3 | |
| -\(\frac{6}{11}\)z - \(\frac{6}{11}\) | |
| -12z + 4 | |
| \(\frac{3}{11}\)z - \(\frac{4}{11}\) |