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共回答了19个问题采纳率:84.2% 举报
[60÷(1/2+1/3+1/4+1/5)]÷[(5又13/20+3又2/11+11.35—2又5/33)÷5又2/3]
=[60÷77/60]÷[(5.65+11.35+3又2/11—2又5/33)÷5又2/3]
=3600/77÷[(17+34/33)÷17/3]
=3600/77÷[17÷17/3+34/33÷17/3]
=3600/77÷[3+2/11]
=3600/77÷35/11
=720/49
1年前
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[60÷(1/2+1/3+1/4+1/5)]÷[(5又13/20+3又2/11+11.35—2又5/33)÷5又2/3] =[60÷77/60]÷[(17+34/33)÷17/3] =3600/77÷[3+2/11] =3600/77÷35/11 =720/49