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