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15 January, 23:56

3x + y = 15

5x - y = 9

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Answers (1)
  1. 16 January, 00:20
    0
    3x + y = 15

    5x - y = 9

    8x = 24

    8 8

    x = 3

    3 (3) + y = 15

    9 + y = 15

    - 9 - 9

    y = 6

    (x, y) = (3, 6)
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