算式|四年级奥数题及答案
在下面的算式中,不同的字母代表不同的数字,相同的字母代表相同的数字,求
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答案:这道题可以从个位开始,比较等式两边的数,逐个确定各个
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(100000+x)×3=10x+1
300000+3x=10x+1
7x=299999
x=42857


