10-R/CD=R/AB 如何整理得R=10AB/AB+CD?
回答 (2)
2016-07-29 3:57 am
(10-R)/CD=R/AB
10AB-ABR=CDR
R(CD+AB)=10AB
R=10AB/(CD+AB)
10AB-ABR=CDR
R(CD+AB)=10AB
R=10AB/(CD+AB)
2016-05-04 12:06 am
Sol
(10－R)/CD=R/AB
(10－R)*AB=RCD
10AB－RAB=RCD
10AB=RAB+RCD
10AB=R(AB+CD)
R(AB+CD)=10AB
R=10AB/(AB+CD)
(10－R)/CD=R/AB
(10－R)*AB=RCD
10AB－RAB=RCD
10AB=RAB+RCD
10AB=R(AB+CD)
R(AB+CD)=10AB
R=10AB/(AB+CD)
收錄日期: 2021-04-18 14:47:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160503070630AAQWdtb