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16 March, 08:52

13) - 3x - 4y = 8

-4x - 3y=6

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Answers (1)
  1. 16 March, 09:44
    0
    x = 0, y = - 2

    Step-by-step explanation:

    -3x - 4y = 8 (1)

    -4x - 3y=6 (2)

    Multiply (1) by - 4 and (2) by - 3, we have:

    12x + 16y = - 32 (3)

    12x + 9y = - 18 (4)

    Subtract (4) from (3), we have:

    (12x + 16y) - (12x + 9y) = - 32 - (-18)

    7y = - 14

    => y = - 2

    Replace y with - 2 in (3), we have x = 0
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