1/2008-1/2007的绝对值+1/2009-1/2008的绝对值-1/2007-1/2009的绝对值(急)

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1/2008-1/2007的绝对值+1/2009-1/2008的绝对值-1/2007-1/2009的绝对值(急)大哥大姐帮帮忙啦1/2008-1/2007的绝对值+1/2009-1/2008的绝对值-1/2007-1/2009的绝对值

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优雅的蛋挞

能干的星星

2026-05-29 05:05:03

1/2008-1/2007的绝对值+1/2009-1/2008的绝对值-1/2007-1/2009的绝对值
=1/2007-1/2008+1/2008-1/2009-(1/2007-1/2009)
=1/2007-1/2008+1/2008-1/2009-1/2007+1/2009
=0

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  • 机智的流沙
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    2026-05-29 05:05:03

    1/2008-1/2007的绝对值+1/2009-1/2008的绝对值-1/2007-1/2009的绝对值 =1/2007-1/2008+1/2008-1/2009-(1/2007-1/2009)=1/2007-1/2008+1/2008-1/2009-1/2007+1/2009=0

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