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

Toán Lớp 7: Tính nhanh `|97 2/3 -125 3/5 |+97 2/3 -125 1/3`

Toán Lớp 7: Tính nhanh
|97 2/3 -125 3/5 |+97 2/3 -125 1/3

Comments ( 2 )

  1. | 97 2/3 – 125 3/5 | + 97 2/3 – 125 1/3
    = 125 3/5 – 97 2/3 + 97 2/3 – 125 1/3
    = ( 125 3/5 – 125 1/3 ) + ( -97 2/3 + 97 2/3 )
    = 4/15 + 0
    = 4/15
     

  2. Lời giải chi tiết:
    |97\frac{2}{3}-125\frac{3}{5}|+972/3-1251/3
    =1252/3-973/5+972/3-1251/3
    =(125\frac{2}{3}-125\frac{1}{3})+(97\frac{3}{5}-97\frac{2}{3})
    =2/3-1/3+3/5-2/3
    =(2/3-2/3)+(3/5-1/3)
    =0+4/15
    =4/15

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

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