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 = 5c - 2y + 5 for c in terms of y.
| 9y + 7 | |
| \(\frac{11}{12}\)y - \(\frac{5}{12}\) | |
| -1\(\frac{3}{4}\)y + 1\(\frac{1}{4}\) | |
| \(\frac{2}{15}\)y - \(\frac{3}{5}\) |