t-1 4-t
__ - __ -2=0
5 2
Maths~~~~~
2007-10-21 10:28 pm
回答 (1)
2007-10-21 11:04 pm
✔ 最佳答案
(2(t-1)/10)- ((20-5t)/10) - 2 =0(2t-2-20+5t)/10 -2 = 0
(7t-22)/10-2=0
7t-22=20
7t=42
t=6
參考: my caculation
收錄日期: 2021-04-13 18:37:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071021000051KK02328