Contact us
Choose a category below so we can get back to you as quickly as possible.
這題我做過: 1-1/3(三分之一)-1/3(1-1/3)=4/9 還剩九分之四沒有看完. 麻煩你自己驗證一下,很長時間都沒做過了,萬一錯了就不好了. 你小學滴包?還是初一滴?
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.