Contact us
Choose a category below so we can get back to you as quickly as possible.
設1班人數X,2班人數Y. 列方程組 1)X+Y=84 2)5/8X+3/4Y=58 解得:X=40 Y=44 1班人數40,2班人數44
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.