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22 September, 16:20

X~4y=11, 5x~7y=~10 system of equation using elimination to solve

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  1. 22 September, 16:26
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    1x + 4y = 11 ⇒ 5x + 20y = 55

    5x - 7y = - 10 ⇒ 5x - 7y = - 10

    27y = 65

    27 27

    y = 2¹¹/₂₇

    x + 4 (2¹¹/₂₇) = 11

    x + 8²²/₂₇ = 11

    - 8²²/₂₇ - 8²²/₂₇

    x = 2⁵/₂₇

    (x, y) = (2⁵/₂₇, 2¹¹/₂₇)
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