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1 February, 09:27

Simultaneous equation 8x-2y=50

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Answers (2)
  1. 1 February, 09:47
    0
    8x = 50 + 2y; 8 (50+2y) - 2y = 50. 400 + 16y - 2y = 50.14y = 50-400; 14y = - 350; y = - 25. 8x - 25*2 = 50; 8x-50=50; x = 1 00: 8 = 12.5
  2. 1 February, 09:54
    0
    8x - 2y = 50

    8x - 8x - 2y = 50 - 8x

    -2y = 50 - 8x

    -2 - 2

    y = 25 - 4x

    8x - 2 (25 - 4x) = 50

    8x - 50 + 8x = 50

    8x + 8x - 50 = 50

    16x - 50 = 50

    +50 + 50

    16x = 100

    16 16

    x = 6 1/4

    8 (6 1/4) - 2y = 50

    50 - 2y = 50

    -50 - 50

    -2y = 0

    -2 - 2

    y = 0

    (x, y) = (6 1/4, 0)
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