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 -6c + 9c = 3c - 7y + 9 for c in terms of y.
| y - 8 | |
| 4\(\frac{2}{3}\)y + 3 | |
| -10y + 6 | |
| 1\(\frac{7}{9}\)y - 1 |