Contact us
Choose a category below so we can get back to you as quickly as possible.
クラス全体で45人 設男x人.則女3/2x人. 2x+3分子2x*3=108 2x+2x=108 4x=108 x=27 則男有27人.27除3*2=18人.則女有18人 18+27=45
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.