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 + 8x - 7 for c in terms of x.
| x - 3 | |
| -\(\frac{1}{12}\)x - \(\frac{7}{12}\) | |
| -4\(\frac{1}{3}\)x - 1\(\frac{2}{3}\) | |
| \(\frac{1}{8}\)x + 1 |