Matematika

Pertanyaan

*pers linear 2 variabel
1/2x + 1/3y = 4
1/4x - 2/3y = -3

1 Jawaban

  • Bab Persamaan Linear
    Matematika SMP Kelas VIII

    (1/2) x + (1/3) y = 4
    **dikalikan 6**
    3x + 2y = 24

    (1/4) x - (2/3) y = -3
    **dikalikan 12**
    3x - 8y = -36

    3x + 2y = 24
    3x - 8y = -36
    ------------------- -
           10y = 60
               y = 6

    3x + 2y = 24
    3x + 2 . 6 = 24
    3x = 24 - 12
    x = 12/3
    x = 4

    (4, 6)

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