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6 August, 00:22

Solve the following system. Verify the solution.

y = 4x - 11

x = 2y - 13

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Answers (1)
  1. 6 August, 00:27
    0
    Y = 4x - 11

    x = 2y - 13

    x = 2 (4x - 11) - 13

    x = 2 (4x) - 2 (11) - 13

    x = 8x - 22 - 13

    x = 8x - 35

    - 8x - 8x

    -7x = - 35

    -7 - 7

    x = 5

    y = 4x - 11

    y = 4 (5) - 11

    y = 20 - 11

    y = 9

    (x, y) = (5, 9)
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