2.)1/x+1/2x-1/3x=7/3
6/6x + 3/6x – 2/6x = 7/3
7/6x = 7/3
1/6x = 1/3----why will calculate this step??
3 = 6x
x = 0.5
收錄日期: 2021-04-13 00:17:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061125000051KK03609