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4 May, 13:47

4x+7y=19

y=x+9

what is the coordinates?

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Answers (1)
  1. 4 May, 15:36
    0
    4x+7 (x+9) = 19

    4x+7x+63=19

    11x=-44

    x=-4

    y=-4+9

    y=5

    (-4,5)
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