bo ngoac roi tinh
(45+120)+(2012-120-45)
(1890-19-5)-(19-5+1890)
(67+346)+(2011-67-346)
(1911-5-6)-(5-6+1911)
(167+1346)+(2010-167-1346)
(1969-3-9)-(3-9+1969)
CAC BAN GIUP MINH NHA AI BIET CAU NAO LAM CAU DO CUNG DUOC NHUNG PHAI CHAC CHAN DUNG NHA AI LAM DUNG NHAT MINH SE CHO NHIEU LIKE