Ответы и объяснения

2012-10-16T22:39:00+04:00

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