3x(2/3)= 2
1. x = 0.66666....
2. 10x = 6.66666...
2-1
10x - x = 9x = 6.66666... - 0.66666 = 6
x = 6/9=2/3
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我的方法3。你绕了一圈,还是同一个问题,何以10x=6.666。。。?
-兄贵-
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07/01/2013 postreply
09:55:08
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You win :)
-yddad-
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07/01/2013 postreply
10:19:35