1/12, 1/6, 1/3, 2/3, ... maka 6 U13=...

Name: 1/12, 1/6, 1/3, 2/3, ... maka 6 U13=...
Uploaded: 2024-02-08T01:51:43
Duration: PT3M9.547S
Description: 1/12, 1/6, 1/3, 2/3, ... maka 6 U13=...