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

Toán Lớp 6: 5.-2phần 15 .x bằng -3 phần 10

Toán Lớp 6: 5.-2phần 15 .x bằng -3 phần 10

Comments ( 2 )

  1. 5 . -2/15 . x = -3/10
    -2/15 . x = -3/10 : 5
    -2/15 .x = -3/10 . 1/5
    -2/15 .x = -3/50
    x = -3/50 : -2/15
    x = -3/50 . 15/-2
    x= -45/-100
    x= 9/20
     

  2. 5×-2/15×x=-3/10
    -2/15×x=-3/10:5
    -2/15×x=-3/10×1/5
    -2/15×x=-3/50
    x=-3/50×-15/2
    x=9/20

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