Contact us
Choose a category below so we can get back to you as quickly as possible.
一個數的b倍乘以這個數的倒數 =一個數的b倍/這個數 =b=4又3分之2=4+2/3=14/3 1/b=3/14
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.