如题所述
解ï¼
åå¼=156156156/212121*111111/132132132
=ã(156*1001001)/(21*101010)ã*ã(11*101010)/(132*1001001)ã
=156/21*11/132
=13/21
åå¼=156156156/212121*111111/132132132
=ã(156*1001001)/(21*101010)ã*ã(11*101010)/(132*1001001)ã
=156/21*11/132
=13/21
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