Matematika

Pertanyaan

2x-3y=7dan3x-4y=11
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1 Jawaban

  • 2x - 3y = 7 | × 3 | 6x - 9y = 21
    3x - 4y = 11 | × 2 | 6x - 8y = 22
    ______________________—
    -y = -1
    y = 1

    2x - 3y = 7
    2x - 3(1) = 7
    2x - 3 = 7
    2x = 10
    x = 5

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