Matematika

Pertanyaan

Soal psldv eliminasi dan subtitusi
2X - Y = 14
X + 3Y = 0

1 Jawaban

  • metode ELIMINASI
    2X - Y = 14 ..... ( ×1)
    X + 3Y = 0 ...... (×2)
    ..
    2x - y = 14
    2x + 6y = 0
    ----------------- --
    - 7y = 14
    y = 14/-7
    y = -2

    y = -2 SUBTITUSI ke 2x - y = 14
    2x -(-2) = 14
    2x + 4 = 14
    2x = 14 - 4
    2x = 10
    x = 10/2
    x = 5

    jadi x = 5 dan y = -2

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