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 + 8c = -9c - 9x - 2 for c in terms of x.
| x - 1\(\frac{2}{7}\) | |
| -2\(\frac{1}{7}\)x - \(\frac{2}{7}\) | |
| -8\(\frac{1}{2}\)x - 1 | |
| \(\frac{9}{10}\)x - \(\frac{1}{10}\) |