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

Toán Lớp 5: 2,Tìm a/b biết 5/6-a/bx1/3=1/2

Toán Lớp 5: 2,Tìm a/b biết 5/6-a/bx1/3=1/2

Comments ( 2 )

  1. 5/6 – a/b × 1/3 = 1/2
    => a/b × 1/3 = 5/6 – 1/2 = 5/6 – 3/6 = 2/6 = 1/3
    => a/b = 1/3 : 1/3 = 1
    Vậy a và b có vô số giá trị sao cho a=b

  2. 5/6 – a/b x 1/3 = 1/2
    a/b x 1/3 = 5/6 – 1/2
    a/b x 1/3 = 1/3
    Vậy a/b = 1/1

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