giúp mik giải bài này với nha . Link bài phía dưới: https://olm.vn/hoi-dap/detail/197688777022.html
https://olm.vn/hoi-dap/detail/2341678675520.html
https://olm.vn/hoi-dap/detail/4842033678897.html
https://olm.vn/hoi-dap/detail/226512590404.html
https://olm.vn/hoi-dap/detail/225034432119.html
https://olm.vn/hoi-dap/detail/256568669204.html
làm dùm tôi đi ( https://olm.vn/hoi-dap/detail/196719373469.html )
https://olm.vn/hoi-dap/detail/236143287807.html?pos=549834373860
giải hộ
https://olm.vn//hoi-dap/detail/226242095586.html?auto=1
giúp mk nhé