сократите дробь помогите...

Тема в разделе "Математика", создана пользователем хули@gan, 4 апр 2010.

  1. хули@gan

    хули@gan New Member

    сократите дробь помогите пожалуйста 7*3/3*14 10*9/30*9 10*11*9/12*10*11 12*14*16/14*16*184*12/5*9
     
  2. Nik_Naim

    Nik_Naim New Member

     7*3          7          1
    ------- = ------- = -----    <-  дроби сократились
    3*14       14         2
     
    сперва 3 на 3, затем 7 на 7 и 14 на 7
    ===========================================================
     
    10*9          10          1
    -------- = ------- = -------     <-  дроби сократились
    30*9          30         3
     
    сперва 9 на 9, затем 10 на 10 и 30 на 10
    ============================================================
     
    10*11*9                                                                         9                                                       3
    -----------  = сокращаем 10 на 10 и 11 на 11 = ----------  сократим еще на 3   = ----------
    12*10*11                                                                      12                                                    4
     
    =======================================================================
     
     
    12*14*16                                                     12

    ------------- = сокращаем 14 и 14, а также 16 и 16 = -------------- делим( или сокращаем) на 6

    14*16*18                                                                   18

           2
    = ---------
           3
     ================================================================
     
    4*12                                                                                              4*4
    ------- = сокращаем: 12 делим на 3 и 9 делим на 3 = ------------- перемножаем
    5*9                                                                                                 5*3
     
    16             1
    ----- = 1 ------
    15            15
     
     ======================================================================
     
    14*15                                                                                                 14*3
    ---------- = сокращаем: 15 делим на 5 и 20 делим на 5 = ----------- =
    21*20                                                                                                 21*4
                                                                                                14*1
    =сокращаем: 3 делим на 3 и 21 делим на 3 = -------------- =
                                                                                                 7*4
                                                                                                 2               1
    = сокращаем: 14 делим на 7 и 7 делим на 7 = ---------- = ---------
                                                                                                 4               2
    ====================================================================
     
     
        5*9
    ------------ = сокращаем: 5 делим на 5 и 30 делим на 5 а также 6 на 3 и 9 на 3
    6*7*30
     
              1*3                                                                                                 1*1
    =--------------- = сокращаем: 3 делим на 3 и 6 делим на 3 = -------------  перемножаем
           2*7*6                                                                                               2*7*2
     
            1
    =-----------
            28
     
     ======================================================================
     
     3*4*25                                                                                                4*25
    -----------  = сокращаем: 3 делим на 3 и 15 делим на 3 = ----------------- =
     24*15                                                                                                 24*5
                                                                                                  4*5
    =сокращаем: 25 делим на 5 и 5 делим на 5 = --------------- =
                                                                                                   24
                                                                                               5
    =сокращаем: 4 делим на 4 и 24 делим на 4 = --------
                                                                                               6
    ================================================================
     
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