Matematika

Pertanyaan

hasil dari 5x-2y=2 3x+4y=8

1 Jawaban

  • 5x -  2y = 2 (×2) 10x - 4y = 4
    3x + 4y = 8 (×1) 3x + 4y = 8
    _________________________ +
                             13x = 12
                                 x = 12/13

    5x - 2y = 2
    5(12/13) -2y = 2
    60/13 - 2y = 2
    -2y = 2 - 60/13
    -2y = 2 - 4 8/13
    -2y = -2 8/13
    -2y = -34/13
    y = -34/13 : (-2)
    y = -34/13 × (-1/2)
    y = 34/26
    y = 1 8/26
    y = 1 4/13

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