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 - 7c = 6c + 8x + 9 for c in terms of x.
| -x - 1\(\frac{1}{4}\) | |
| -\(\frac{5}{14}\)x - \(\frac{1}{2}\) | |
| -x - \(\frac{3}{5}\) | |
| -x + \(\frac{2}{3}\) |