1/50+1/55+1/60+1/65=3013/42900
我想問3013/42900是怎樣計算出來的。（請詳細一些。要中文。非常謝謝）
比例數值是多少？（新）
2011-01-10 6:02 am
回答 (3)
2011-01-10 6:21 am
✔ 最佳答案
1/50 + 1/55 + 1/60 + 1/65= 1x55x60x65/50x55x60x65 + 1x50x60x65/50x55x60x65 + 1x50x55x65/50x55x60x65 + 1x50x55x60/50x55x60x65
= 214500/10725000 + 195000/10725000 + 178750/10725000 + 165000/10725000
= 753250/1072500
= 3013x250/42900x250
= 3013/42900
參考: micatkie
2011-01-10 7:13 am
It is easy.
First,you should calculate it with calculater.Then,you push the button which is under Prog(ab/c).Its function is changed to decimal from fraction.
2011-01-09 23:15:15 補充：
I guess that you are studying in secondary school.You must have a calculater.
First,you should calculate it with calculater.Then,you push the button which is under Prog(ab/c).Its function is changed to decimal from fraction.
2011-01-09 23:15:15 補充：
I guess that you are studying in secondary school.You must have a calculater.
2011-01-10 6:03 am
其實在計算這類的題目時,先會將彼此的分式通分母,在化作同一分母之後,互常作加減運算就能得出答案了.
希望幫到你:)
2011-01-09 22:04:51 補充：
當然這些較繁瑣的運算用計算機就能輕易解決了!
希望幫到你:)
2011-01-09 22:04:51 補充：
當然這些較繁瑣的運算用計算機就能輕易解決了!
收錄日期: 2021-04-13 17:45:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110109000051KK01286