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 = -8c + 8x + 9 for c in terms of x.
| -x - 8 | |
| -3x - 2 | |
| -2\(\frac{3}{4}\)x + 2\(\frac{1}{4}\) | |
| -15x - 9 |