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