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75.2-66.9-5.2怎么用简便方法算

    发布时间:2020-03-21

    5+2/5×3/8
    =2/3-2/4
    2-6/8×2/5+3/13×26/5×2/8
    =2/8×(2/5+3/5)
    =2/8×1
    =1/9-2/3
    =2-4/3
    =2-(4/3+2ǘ/8×2/

    回复:

    18
    =23/18+9/2
    =7/2
    =14/9+5/9+1/9+1ǘ/18
    =1+5/

    回复:

    12+9/60+50/20-11/60一57/60一22/30简便计算
    =90/60+22/2+5/60一35/6-7/60
    =(90/60+27/6
    =1又5/60+27/60)
    =167/60
    =110/60
    =11Ǚ/60)一(35/60+50/

    回复:

    2/8×2/5+2/5×3/8 =2/8×2/5+3/5×2/8 =2/8×(2/5+3/5) =2/8×1 =1/4 2-6/13×26/9-2/3 =2-4/3-2/3 =2-(4/3+2/3) =2-2 =0

    回复:

    =16-(5.75+2.25) =16-8 =8

    回复:

    2/9+5/9+1/2 =7/9+1/2 =14/18+9/18 =23/18 =1+5/18

    回复:

    3/2+5/6-7/12+9/20-11/30简便计算 =90/60+50/60一35/60+27/60一22/60 =(90/60+50/60+27/60)一(35/60+22/60) =167/60一57/60 =110/60 =11/6 =1又5/6

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