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

Toán Lớp 5: 5.Tìm x a) X – 5/7 = 3/8 b) X + 2/7 = 1/2 c) X x 4/7 = 3/8

Toán Lớp 5: 5.Tìm x
a) X – 5/7 = 3/8
b) X + 2/7 = 1/2
c) X x 4/7 = 3/8

Comments ( 2 )

  1. Giải đáp:
    a, x – 5/7 = 3/8
    x = 3/8 + 5/7
    x = 61/56
    b, x + 2/7 = 1/2
    x = 1/2 – 2/7
    x = 3/14
    c, x × 4/7 = 3/8
    x = 3/8 : 4/7
    x = 3/8 × 7/4
    x = 21/23
    #AkiSha2007

  2. 5.
    a) X – 5/7 = 3/8
                  x = 3/8+5/7
                  x =61/56
    b) X + 2/7 = 1/2
                    x = 1/2-2/7
                    x =  3/14
    c) X ×4/7 = 3/8
                   x = 3/8 : 4/7
                   x = 21/32
    # no coppy
    Bạn tham khảo .

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