7k=2/5k+8 k=??
A,B二人分一筆錢,A取了2/5及20元後便與B相同,筆錢原有多少??
45%*8.4*50/32 =??
(0.3*0.03*0.03)/3*K*0.3 K=??
5/Y*6=7/Y+8 Y=??
收錄日期: 2021-04-19 20:27:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070526000051KK00707