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拆项法:(-2010又5/6)+(-2009又2/3)+4020又2/3+(-1又1/2)=
人气:182 ℃ 时间:2020-05-26 09:53:16
解答
(-2010又5/6)+(-2009又2/3)+4020又2/3+(-1又1/2)
=(-2010-2009+4020-1)+(-5/6-2/3+2/3-1/2)
=-5/6-1/2
=-4/3
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