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9 December, 23:37

Is (4,-5) a possible solution to 5x + 2y = 8?

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Answers (2)
  1. 9 December, 23:55
    0
    No because x=4 and y=-5 and when you plug it in you get 5 (4) + 2 (-5) = 8 20+-10=8 and 10 = does not work so it is not a possible solution.
  2. 9 December, 23:56
    0
    (x, y)

    (4,-5)

    subsitute and see if true

    sub 4 for x and - 5 for y

    5 (4) + 2 (-5) = 8

    20-10=8

    10=8

    false

    it is not a possible solution
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