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

Toán Lớp 6: -1/4 và 3/12 ,,,,,,2/3và 6/8,,,,,,,,,3/5và 6/10,,,,,,,4/3và 11/9

Toán Lớp 6: -1/4 và 3/12 ,,,,,,2/3và 6/8,,,,,,,,,3/5và 6/10,,,,,,,4/3và 11/9

Comments ( 2 )

  1. a ) 1/4 = {1 × 3}/{4 × 3} = 3/12
    3/12 = 3/12 => 1/4 = 3/12
    b ) 2/3 = {2 × 8}/{3 × 8} = 16/24
    6/8 = {6 × 3}/{8 × 3} = 18/24
    16/24 < 18/24 => 2/3 < 6/8
    c ) 3/5 = {3 × 2}/{5 × 2} = 6/10
    6/10 = 6/10 => 3/5 = 6/10
    d ) 4/3 = {4 × 3}/{3 × 3} = 12/9
    12/9 > 11/9 => 4/3 > 11/9
    #dtkc
     

  2. 1/4=3/(12)
    mà3/(12)=3/(12)
    ⇒1/4=1/(12)
    2/3=8/(12)
    6/8=3/4=9/(12)
    mà8/(12)<9/(12)
    ⇒2/3<6/8
    3/5=6/(10)
    mà 6/(10)=6/(10)
    nên3/5=6/(10)
    4/3=(12)/9
    mà (12)/9>(11)/9
    nên4/3>(11)/9
    #NoCopy
     

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