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27 August, 03:29

10. 4x - 7y = 3

x - 7y = - 15

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Answers (1)
  1. 27 August, 03:30
    0
    (2/5,-1/5)

    Step-by-step explanation:

    solve the second equation for x

    x = - 7y - 1

    replace the x in the first equation

    4• (-7y-1) - 7y = 3

    - 35y = 7

    solve for y

    35y = - 7

    y = - 1/5

    which gives us

    x = - 7y-1

    y = - 1/5

    then use the y value to solve for x

    x = - 7 (-1/5) - 1 = 2/5
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