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

Toán Lớp 7: e) -2: 1/3+1/2 nhân 2/3 + 1/3 f ) -4:9/2+5/2-1/3

Toán Lớp 7: e) -2: 1/3+1/2 nhân 2/3 + 1/3
f ) -4:9/2+5/2-1/3

Comments ( 2 )

  1. e) -2 : 1/3 + 1/2 . 2/3 + 1/3
    = -6 + 1/3 + 1/3
    = -16/3
    f) -4 : 9/2 + 5/2 – 1/3
    = -8/9 + 5/2 – 1/3
    = ( -8/9 – 1/3) + 5/2
    = (-8/9 – 3/9) + 5/2
    = -11/9 + 5/2
    = 23/18
     

  2. e)
    -2:1/3+1/2×2/3+1/3
    =-2×3/1+1/3+1/3
    =(-6)/1+1/3+1/3
    =(-18)/3+1/3+1/3
    =(-16)/3
    f)
    -4:9/2+5/2-1/3
    =-4×2/9+5/2-1/3
    =(-8)/9+5/2-1/3
    =(-16)/18+45/18-6/18
    =23/18
     

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