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

Toán Lớp 5: 1/3+1/5+1/15=?+3/15 giúp heo với ạ

Toán Lớp 5: 1/3+1/5+1/15=?+3/15
giúp heo với ạ

Comments ( 2 )

  1. 1/3 + 1/5 + 1/(15)= 6/(15) + 3/(15)
    vì 1/3 + 1/5 + 1/(15) = 9/(15)
     => 9/(15) – 3/(15) = 6/(15)

  2. 1/3 + 1/5 + 1/15
    = 5/15 + 3/15 + 1/15
    = 3/15 + 6/15
    Vậy : ? = 6/15
     

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

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