Matematika

Pertanyaan

Seleseikan pertidaksamaan berikut
|6x-7|= |3+2x|

1 Jawaban

  • Bab Nilai Mutlak
    Matematika SMA Kelas X

    |6x - 7| = |3 + 2x|

    (6x - 7)² = (3 + 2x)²
    (6x - 7)² - (3 + 2x)² = 0
    (6x - 7 + 3 + 2x) (6x - 7 - 3 - 2x) = 0
    (8x - 4) (4x - 10) = 0
    8x - 4 = 0
    8x = 4
    x = 4/8 
    x = 1/2

    4x - 10 = 0
    4x = 10
    x = 10/4
    x = 5/2



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