thuc hien tinh 1x2x3x4x5
--------------- roi viet ket qua duoi dang phan so toi gian
3x4x5x6x7
viet phan so 7/12 thanh phan so toi gian
viet phan so 1/2 thanh tong cua hai phan so toi gian khac nhau (tim hai cach viet khac nhau
em hay viet phep tinh va tinh tong so phan da keo cua ca hai cau so la:
giup toi voi nhanh len nha
viet phan so 2/3 thanh tong cua 2 phan so toi gian khac nhau
15/10-3/4-2/5 viet phan so toi gian
35/72 da la phan so toi gian chua
viet moi phan so sau thanh tong hai phan so toi gian co cung mau so :a 8phan15 b 11phan16
hung co 15 vien bi xanh , 8 vien bi vang va 12 vien bi do . Em hay viet phan so chi so phan cac vien bi mau xanh trong so bi hung co .[ phan so duoc viet duoi dang toi gian ] lam on giai ho minh nhe . ai giai dung minh like cho