Contact us
Choose a category below so we can get back to you as quickly as possible.
(4/5)*(1/8)=1/10
原式=8a+2b+5a-b=13a+b.
解 原式=(3.5+2.8-1)a=5.3a
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.