РЕШИТЕ УРАВНЕНИЕ!ПОЖАЛУЙСТА 3X-5/7+2X+1/14...

Тема в разделе "Алгебра", создана пользователем Heatley, 11 янв 2010.

  1. Heatley

    Heatley New Member

    РЕШИТЕ УРАВНЕНИЕ!ПОЖАЛУЙСТА 3X-5/7+2X+1/14 = 2X-3/2
     
  2. demo4ka

    demo4ka New Member

    Выражение: 3*X-5/7+2*X+1/14=2*X-3/2

    Ответ: 3*X+(6//7)=0

    Решаем по действиям:
    1) 5/7=(5//7)
    2) 3*X+2*X=5*X
    3) 1/14=(1//14)
    4) -(5//7)+(1//14)=-(9//14)
    5) 5*X-2*X=3*X
    6) 3/2=1.5
      3.0|2_ _
      2_ |1.5
      10
      1_0_
       0
    7) -(9//14)+1.5=(6//7)

    Решаем по шагам:
    1) 3*X-(5//7)+2*X+1/14-2*X+3/2=0
      1.1) 5/7=(5//7)
    2) 5*X-(5//7)+1/14-2*X+3/2=0
      2.1) 3*X+2*X=5*X
    3) 5*X-(5//7)+(1//14)-2*X+3/2=0
      3.1) 1/14=(1//14)
    4) 5*X-(9//14)-2*X+3/2=0
      4.1) -(5//7)+(1//14)=-(9//14)
    5) 3*X-(9//14)+3/2=0
      5.1) 5*X-2*X=3*X
    6) 3*X-(9//14)+1.5=0
      6.1) 3/2=1.5
          3.0|2_ _
          2_ |1.5
          10
          1_0_
           0
    7) 3*X+(6//7)=0
      7.1) -(9//14)+1.5=(6//7)


    Приводим к окончательному ответу с возможной потерей точности:

      Окончательный ответ: 3*X+0.857142857142857=0

      По действиям:
      1) 6//7~~0.857142857142857
          6.0|7_ _
          5_6_|0.8571428571428571428
           40
           3_5_
            50
            4_9_
             10
              7_
              30
              2_8_
               20
               1_4_
                60
                5_6_
                 40
                 3_5_
                  50
                  4_9_
                   10
                    7_
                    30
                    2_8_
                     20
                     1_4_
                      60
                      5_6_
                       40
                       3_5_
                        50
                        4_9_
                         10
                          7_
                          30
                          2_8_
                           20
                           1_4_
                            60
                            5_6_
                             4

      По шагам:
      1: 3*X+0.857142857142857=0
        1.1) 6//7~~0.857142857142857
              6.0|7_ _
              5_6_|0.8571428571428571428
               40
               3_5_
                50
                4_9_
                 10
                  7_
                  30
                  2_8_
                   20
                   1_4_
                    60
                    5_6_
                     40
                     3_5_
                      50
                      4_9_
                       10
                        7_
                        30
                        2_8_
                         20
                         1_4_
                          60
                          5_6_
                           40
                           3_5_
                            50
                            4_9_
                             10
                              7_
                              30
                              2_8_
                               20
                               1_4_
                                60
                                5_6_
                                 4
     

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