Contact us
Choose a category below so we can get back to you as quickly as possible.
6又七分之四-2又八分之一+七分之十七-0.875 =(6又4/7+17/7)-(2又1/8+7/8) =9-3 =6 如果本題有什麼不明白可以追問,
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.