B\u00e0i 3: B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m Gi\u1ea3i t\u00edch 12: Ph\u00e9p chia s\u1ed1 ph\u1ee9c (Ph\u1ea7n 1)<\/a><\/blockquote><\/iframe>