7*ABCDEF=6*DEFABC求ABCDEF是多少備註:ABCDEF是1個六位數
7*ABCDEF=6*DEFABC令ABC=X,DEF=Y則:7000X+7Y=6000Y+6X6994X=5993Y538X=461Y又X.Y皆為整數所以X=461,Y=538ABCDEF=461538
kuopinghsien 寫道:7*ABCDEF=6*DEFABC求ABCDEF是多少備註:ABCDEF是1個六位數
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