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

Toán Lớp 6: 12/6.7+12/7.22+12/22.15+12/15.38+…+12/97.202

Tháng Hai 14, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: 12/6.7+12/7.22+12/22.15+12/15.38+…+12/97.202

Comments ( 2 )

  1. diepbich93
    diepbich93
    14 Tháng Hai, 2023 at 6:50 sáng
    Reply
    12/(6.7) + 12/(7.22) + 12/(22.15) + 12/(15.38) + … + 1/(97.202)
    = 12 . (1/(6.7) + 1/(7.22) + 1/(22.15) + … + 1/(97.202))
    = 12 . (1/6 – 1/7 + 1/7 – 1/22 + … + 1/97 – 1/202)
    = 12 . (1/6 – 1/202)
    = 12 . 196/1212
    = 196/101

  2. hoquyly
    hoquyly
    14 Tháng Hai, 2023 at 6:50 sáng
    Reply
    Lời giải và giải thích chi tiết:
    12/6.7+12/7.22+12/22.15+12/15.38+…+12/97.202
     =12.(1/6.7+1/7.22+1/22.25+1/15.38+…+1/97.202)
    =12.(1/6-1/7+1/7-1/22+1/22-1/15+…+1/97-1/202)
    =12.(1/6-1/202)
    =196/101
           Gửi bạn!!

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

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