MATHS..勁EASY...不過要+步驟...

2007-09-11 1:55 am
得兩題嫁姐...好EASY...不過要+步驟....
1. 2分1 除1又2分1 - 5分1 除 5分3
2. 4分1 X ( 3分1 - 9分1 )除 12分1

留意題..

回答 (3)

2007-09-11 2:10 am
✔ 最佳答案
[(1/2)除(3/2)]-[(1/5)除(3/5)]
=[(1/2)X(2/3)]-[(1/5)X(5/3)]
=1/3-1/3
=0
-----------------------------------------
(1/4)[(1/3)-(1/9)]除(1/12)
=(1/4)[(3/9)-(1/9)]X12
=3(2/9)
=2/3
參考: 個人算出
2007-09-11 3:13 am
咁簡單既數都要人計,你去自殺啦,讀咩書呀
參考: 自己既心得
2007-09-11 2:13 am

圖片參考:http://hk.yimg.com/i/icon/16/67.gif
1. 2分1 除1又2分1 - 5分1 除 5分3

圖片參考:http://hk.yimg.com/i/icon/16/66.gif
2分1 除1又2分1 - 5分1 除 5分3

圖片參考:http://hk.yimg.com/i/icon/16/49.gif
=1/2/3/2-1/5/3/5

圖片參考:http://hk.yimg.com/i/icon/16/57.gif
=1/2x2/3 - 1/5x5/3

圖片參考:http://hk.yimg.com/i/icon/16/58.gif
=1/3-1/3

圖片參考:http://hk.yimg.com/i/icon/16/50.gif
=0

圖片參考:http://hk.yimg.com/i/icon/16/10.gif
2. 4分1 X ( 3分1 - 9分1 )除 12分1


圖片參考:http://hk.yimg.com/i/icon/16/25.gif
1/4x( 3分1 - 9分1 )除 12分1

=1/4x(3/9-1/9)/1/12

圖片參考:http://hk.yimg.com/i/icon/16/10.gif
=1/4x2/9x12

圖片參考:http://hk.yimg.com/i/icon/16/26.gif
=2/3

圖片參考:http://hk.yimg.com/i/icon/16/58.gif

參考: me^^


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