= 8 2 = 9 = 3 = 6 = 4= 7 = 5 = 11-4 11-5 11-4 11-5 = 8 9 = 3 = 6 = 7 = 13-7 11-5 43-8 23 - 9 53-7 63-8 = 35 = 46 = 55 = 14 Nhanh nªn nµo c¸c b¹n ¬i ! Cè lªn !