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(-2000又5/6)+(-1999又2/3)+4000又2/3+(-1又1/2)
人气:307 ℃ 时间:2020-04-09 10:21:38
解答
(-2000又5/6)+(-1999又2/3)+4000又2/3+(-1又1/2)
=(-2000-1999+4000-1) +(-5/6-2/3+2/3-1/2)
=0-5/6-1/2
=-4/3
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