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

Toán Lớp 7: (-4/5+5/7):3/17+(-1/5+2/7):3/17 help các bạn giúp mình v

Toán Lớp 7: (-4/5+5/7):3/17+(-1/5+2/7):3/17
help các bạn giúp mình v

Comments ( 2 )

  1. (-4/5+5/7):3/17+(-1/5+2/7):3/17
    = (-4/5 + 5/7 + -1/5 + 2/7) : 3/17
    = (-1 + 1) : 3/17
    = 0 : 3/17
    = 0

  2. text{#Paow}
    (-4/5+5/7):3/17+(-1/5+2/7):3/17
    =(-4/5+5/7).17/3+(-1/5+2/7).17/3
    ={(-4/5+5/7)+(-1/5+2/7)}.17/3
    ={-4/5+(-1/5)+5/7+2/7}.17/3
    =(-1+1).17/3
    =0.17/3
    =0
     

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

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