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 -7c + 5c = -8c + 9x - 9 for c in terms of x.
| 4x - 9 | |
| -11x + 3 | |
| 1\(\frac{1}{3}\)x - 1 | |
| 3x + 1\(\frac{3}{5}\) |