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 + 8c = -5c + 5x - 5 for c in terms of x.
| x - 9 | |
| -\(\frac{1}{3}\)x - \(\frac{5}{9}\) | |
| -1\(\frac{6}{7}\)x + \(\frac{1}{7}\) | |
| -\(\frac{1}{2}\)x - \(\frac{1}{2}\) |