數學題~10分
回答 (3)
2007-12-04 1:34 am
✔ 最佳答案
C = 任何數T = 52
2007-12-04 1:37 am
C为任何数都得
2ｘcｘ(t-10)=3ｘcｘ(80-t)
2(t-10)=3(80-t)
2t-20=240-3t
5t=260
t=52
2ｘcｘ(t-10)=3ｘcｘ(80-t)
2(t-10)=3(80-t)
2t-20=240-3t
5t=260
t=52
2007-12-04 1:33 am
2ｘcｘ(t-10)=3ｘcｘ(80-t)
2(t-10)=3(80-t)
2t-20=240-3t
5t=260
t=52
2(t-10)=3(80-t)
2t-20=240-3t
5t=260
t=52
收錄日期: 2021-04-14 19:02:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071203000051KK02086