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