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29 September, 05:15

3x - 7y = 5

9y = 5x + 5

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Answers (1)
  1. 29 September, 08:13
    0
    Elmination method ...

    multiplied top by 5 and bottom by 3

    15x - 35y = 25

    -15x + 27y = 15

    -8y = 40

    y = - 5

    plug - 5 in ...

    3x - 7 (-5) = 5

    3x + 35 = 5

    3x = - 30

    x = - 10

    (-10,-5)
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