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

Toán Lớp 5: A , X x 2,58 = 6,8 B , 3,2 : X =1,6

Toán Lớp 5: A , X x 2,58 = 6,8
B , 3,2 : X =1,6

Comments ( 2 )

  1. giải 
    A , $x$ x 2,58 = 6,8
    $x$ = 6,8 : 2,58
    $x$ = 2,6
    vậy $x$ = 2,6
    B , 3,2 : $x$ =1,6
    $x$= 3,2 : 1,6
    $x$=2
    vậy $x$=2

  2. x.2,58=6,8
    x=6,8:2,58
    x=2,6
    3,2:x=1,6
    x=3,2:1,6
    x=2

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