1/5y+500=1/y
y=?
help??
2006-11-11 11:51 pm
回答 (2)
2006-11-12 12:31 am
✔ 最佳答案
1/5y+500 = 1/y500 = 1/y﹣1/5y
500 = 5 / 5y﹣1/5y
500 = 5﹣1 / 5y
500 = 4 / 5y
5y(500) = 4
2500y = 4
y = 4 / 2500
y = 1.6×10-3
y = 0.0016
2006-11-12 12:02 am
1/5y+500=1/y
1+2500y=5
2500y=4
y=625
1+2500y=5
2500y=4
y=625
收錄日期: 2021-04-18 19:47:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061111000051KK03081