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