Matematika

Pertanyaan

Tentukan HP dari persamaan brkt :
1. |4-3x|=5/2
2. |5-x| =5/2
3. |3x-4|=0

1 Jawaban

  • 1. |4-3x| = 5/2
    dikali 2
    |8-6x| = 5
    8-6x = 5
    -6x = 5-8
    -6x = -3
    x = -3/-6
    x = 1/2

    2. |5-x| = 5/2
    dikali 2
    |10-2x| = 5
    10-2x = 5
    -2x = 5-10
    -2x = -5
    x = -5/-2
    x = 5/2 = 2 1/2

    3. |3x-4| = 0
    3x-4 = 0
    3x = 0+4
    3x = 4
    x = 4/3 = 1 1/3

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