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