Matematika

Pertanyaan

3x+2y=5
2x-4y=-34

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1 Jawaban

  • 3x + 2y = 5     (x2)
    2x - 4y = -34   (x1)
    ----------------------------
    6x + 4y = 10
    2x - 4y = -34
    ---------------------------- +
    8x = -24
    x = -24/8
    x = -3

    2(-3) - 4y = -34
    -6 - 4y = -34
    -4y = -34+6
    -4y = -28
    y = 7

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