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 = -7c + 2y - 9 for c in terms of y.
| \(\frac{1}{3}\)y - 1\(\frac{2}{3}\) | |
| 1\(\frac{1}{8}\)y - 1\(\frac{1}{8}\) | |
| -1\(\frac{8}{9}\)y + \(\frac{7}{9}\) | |
| 2\(\frac{1}{5}\)y - \(\frac{3}{5}\) |