Matematika

Pertanyaan

Bantu
1. 2 | 4 - x | / | 6x - 7 | = 8 *tanda / artinya per
2. | 4x - 1 | - | 7- 2x | ≤ 0

1 Jawaban

  • [1] 2(4 - x) / (6x - 7) = 8
    (8 - 2x) / (6x - 7) = 8
    8 - 2x = 8(
    6x - 7)
    8 - 2x = 48x - 56
    8 + 56 = 48x + 2x
    64 = 50x
    x = 1,28

    [2] (4x - 1) - (7 - 2x) 
    ≤ 0
    4x - 1 - 7 + 2x ≤ 0
    6x - 8 ≤ 0
    6x - 8 + 8
    ≤ 0 + 8
    6x 
    ≤ 8
    6x / 6
     ≤ 8 / 6
    x
     ≤ 1,333

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