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 -2c + 8c = 8c + 3y + 9 for c in terms of y.
| -\(\frac{1}{3}\)y - \(\frac{1}{3}\) | |
| -\(\frac{3}{14}\)y + \(\frac{5}{14}\) | |
| 1\(\frac{2}{7}\)y + \(\frac{1}{7}\) | |
| \(\frac{1}{2}\)y - \(\frac{9}{10}\) |