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

Toán Lớp 6: B)2/5.7 + 2/7.9 + -.+1/99.100

Toán Lớp 6: B)2/5.7 + 2/7.9 + …..+1/99.100

Comments ( 1 )

  1. B) 2/5.7 + 2/7.9 +………..+ 2/99.101
    = 1/5 – 1/7 + 1/7 – 1/9 +…………+ 1/99 – 1/101
    = 1/5 – 1/101
    = 96/505
     ( Mình sửa lại đề rồi nhé )

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

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