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

Toán Lớp 4: Trừ hai phân số khác mẫu số: a) 6/5 – 2/3 b) 1 – 4/5 c) 5/12-1/4d) 7/8-1/6

Toán Lớp 4: Trừ hai phân số khác mẫu số:
a) 6/5 – 2/3 b) 1 – 4/5 c) 5/12-1/4d) 7/8-1/6

Comments ( 2 )

  1. a):
    6/5 – 2/3
    = 18/15 – 10/15
    = 8/15
    b):
    1 – 4/5
    = 1/1 – 4/5
    = 5/5 – 4/5
    = 1/5
    c):
    5/12 – 1/4
    = 5/12 – 3/12
    = 2/12
    = 1/6
    d):
    7/8 – 1/6
    = 21/24 – 4/24
    = 17/24
    Cho mình xin hay nhất nha bạn
    @Drew Mclntyre
     

  2. ~ Bạn tham khảo ~
    a, 6/5 – 2/3
    = 18/15 – 10/15
    = [18 – 10]/15
    = 8/15
    b, 1 – 4/5
    = 5/5-4/5
    = [5-4]/5
    = 1/5
    c, 5/12 – 1/4
    = 5/12 – 3/12
    = [5-3]/12
    = 2/12
    = 1/6
    d, 7/8 – 1/6
    = 21/24 – 4/24
    = [21-4]/24
    = 17/24

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