I thought it was going to be hard trying to multiply a fraction in order to get a zero pair but it was actually easy. If the 1/4 were to be multiplied by 3, it would be 3/4 which is not 1/2 so try a different # to multiply with. Maybe 4? No, that would equal 1. Maybe 5? No. Maybe 2? Yes! Because if you multiply the top # by 2, it would be 2/4 y = 1/2 y !