Consider this system of equations and the partial solution below. 6 x + 2 y = 6. 7 x + 3 y = 9. Multiply the first equation by –3. Multiply the second equation by 2. Add the resulting system of equations. Which terms will cancel when you add the resulting system of equations? Negative 6 y and 6 y Negative 14 x and 14 x Negative 32 and 32 Negative 18 x and 18 x