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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: $\frac{1}{2011}$+ $\frac{2012.2010}{2011}$-2012

Tháng Tư 21, 2022 Toán học 1 Comment 0 views

Toán Lớp 7: $\frac{1}{2011}$+ $\frac{2012.2010}{2011}$-2012

Comments ( 1 )

  1. ngoclanquynh
    ngoclanquynh
    21 Tháng Tư, 2022 at 1:52 chiều
    Reply
    Lời giải chi tiết:
    1/2011+(2012.2010)/2011-2012
    =1/2011+(2012.2010)/2011-(2012.2011)/2011
    =(1+2012.2010-2012.2011)/2011
    =(1-2010.(2012-2011))/2011
    =(1-2010)/2011
    =-2011/2011
    =-1

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222-9+11+12:2*14+14 = ? ( )

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