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5 March, 20:11

What is the solution of the system defined by y = - x+5 and 5x + 2y = 14?

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  1. 5 March, 20:13
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    y = - x + 5

    5x + 2y = 14

    5x + 2 (-x + 5) = 14

    5x + 2 (-x) + 2 (5) = 14

    5x - 2x + 10 = 14

    3x + 10 = 14

    - 10 - 10

    3x = 4

    3 3

    x = 1¹/₃

    y = - x + 5

    y = - 1¹/₃ + 5

    y = 3²/₃

    (x, y) = (-1¹/₂, 3²/₃)
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