Matematika

Pertanyaan

soal :
1. 9p + 9 = 8p + 4
2. 6p + 7 = 5p - 14
3. 3x + 8 = 4x - 5
4. 18x - 15 = 19x - 7
5. 14x - 10 = 15x + 7
jawablah dengan penyelesaian dari persamaan-persamaan

2 Jawaban

  • 1. 9p + 9 = 8p + 4   
       9p-8p = 4-9
        p =-5

    2. 6p + 7 = 5p - 14
        6p-5p = -14-7
            p = -21

    3. 3x + 8 = 4x - 5
        8+5 = 4x-3x
            x =13

    4. 18x - 15 = 19x - 7
          -15 + 7 = 19x-18x
               x =-8

    5. 14x - 10 = 15x + 7
        -10 -7 = 15x-14x
           x =-17
  • 1. 9p + 9 = 8p + 4
    9p - 8p = 4 - 9
    p = -5
    2. 6p - 5p = -14 - 7
    p = -21
    3. 3x - 4x = - 8 - 5
    - x = - 13
    x = 13
    4. 18x - 19x = -7 + 15
    -x = 8
    x = -8
    5. 14x - 15x = 7 + 10
    - x = 17
    x = - 17

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