Ko đăng 1 bài cùng lúc thành 2 topic vậy đâu nha em
https://drive.google.com/file/d/1_6arefaVbIsi5btcLnG4gh_pjfqZP7ZP/view?usp=sharing
https://diendan.hocmai.vn/threads/toan-lop-5-nang-cao.815206/
https://drive.google.com/file/d/1_6arefaVbIsi5btcLnG4gh_pjfqZP7ZP/view?usp=sharing
https://diendan.hocmai.vn/threads/toan-lop-5-nang-cao.815206/