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2 August, 11:22

1/y - 1/x = 1/60

3y - 2x = 6

(Simultaneous question)

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Answers (1)
  1. 2 August, 12:15
    0
    1y - 1/x = 1/60 = x*y = 60 = x=60/y

    3y - 2 (60/y) = 6

    3y^2-120=6y

    3 (y^2-40-2y) = 0

    y^2-40-2y=0

    y = 7.4

    3 (7.4) - 2x=6

    22.2-2x = 6

    2x = - 16.2

    x = - 8.1
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