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

Toán Lớp 7: ( -2/3 + 3/13 ) : 7/8 + ( -1/3 + 10/13 ) : 7/8

Home/ Toán Lớp 7: ( -2/3 + 3/13 ) : 7/8 + ( -1/3 + 10/13 ) : 7/8

Toán Lớp 7: ( -2/3 + 3/13 ) : 7/8 + ( -1/3 + 10/13 ) : 7/8

Tháng Tư 16, 2022 Toán học 2 Comments 0 views

Toán Lớp 7: ( -2/3 + 3/13 ) : 7/8 + ( -1/3 + 10/13 ) : 7/8

Comments ( 2 )

  1. quynhthanhnghi
    quynhthanhnghi
    16 Tháng Tư, 2022 at 1:36 chiều
    Reply
    ( -2/3 + 3/13 ) : 7/8 + ( -1/3 + 10/13 ) : 7/8
    =[( -2/3 + 3/13 )+ ( -1/3 + 10/13 )]:7/8
    =(-2/3+3/13-1/3+10/13). 8/7
    =[(-2/3-1/3)+(3/13+10/13)] . 8/7
    =(-1+1). 8/7
    =0. 8/7
    =0
     

  2. diepbich93
    diepbich93
    16 Tháng Tư, 2022 at 1:35 chiều
    Reply
    $(\dfrac{-2}{3}+$ $\dfrac{3}{13})$ : $\dfrac{7}{8}$ + ($\dfrac{-1}{3}+$ $\dfrac{10}{13}$ ) : $\dfrac{7}{8}$
    <=> ($\dfrac{-2}{3}+$ $\dfrac{3}{13}$+$\dfrac{-1}{3}+$ $\dfrac{10}{13}$) : $\dfrac{7}{8}$
    = (-1+1) : $\dfrac{7}{8}$
    =0 : $\dfrac{7}{8}$
    =0

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

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