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 + 9c = 2c - 3y - 9 for c in terms of y.
| -1\(\frac{1}{4}\)y - \(\frac{7}{8}\) | |
| \(\frac{5}{6}\)y - 1\(\frac{1}{6}\) | |
| \(\frac{1}{13}\)y + \(\frac{3}{13}\) | |
| -2\(\frac{2}{5}\)y - 1\(\frac{4}{5}\) |