• 12x+23x=19 1011x-12x=14 X+1115x=23 X-58x=9.试题及答案-解答题-云返教育

    • 试题详情

      1
      2
      x+
      2
      3
      x=
      1
      9
      10
      11
      x-
      1
      2
      x=
      1
      4
      X+
      11
      15
      x=
      2
      3
      X-
      5
      8
      x=9.

      试题解答


      见解析
      解:(1)
      1
      2
      x+
      2
      3
      x=
      1
      9

      7
      6
      x=
      1
      9

      7
      6
      x
      ÷
      7
      6
      =
      1
      9
      ÷
      7
      6

      x=
      2
      21


      (2)
      10
      11
      x-
      1
      2
      x=
      1
      4

      9
      22
      x=
      1
      4

      9
      22
      x
      ÷
      9
      22
      =
      1
      4
      ÷
      9
      22

      x=
      11
      18


      (3)x+
      11
      15
      x=
      2
      3

      26
      15
      x=
      2
      3

      26
      15
      x
      ÷
      26
      15
      =
      2
      3
      ÷
      26
      15

      x=
      5
      13


      (4)x-
      5
      8
      x=9,
      3
      8
      x=9,
      3
      8
      x
      ÷
      3
      8
      =9
      ÷
      3
      8

      x=24.
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