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13 January, 16:19

Solve using elimination.

-4x + 3y = - 1

-4x + 5y = - 7

+3
Answers (1)
  1. 13 January, 17:48
    0
    x = - 2, y = - 3

    Step-by-step explanation:

    Solve the following system:

    {3 y - 4 x = - 1 | (equation 1)

    5 y - 4 x = - 7 | (equation 2)

    Subtract equation 1 from equation 2:

    { - (4 x) + 3 y = - 1 | (equation 1)

    0 x+2 y = - 6 | (equation 2)

    Divide equation 2 by 2:

    { - (4 x) + 3 y = - 1 | (equation 1)

    0 x+y = - 3 | (equation 2)

    Subtract 3 * (equation 2) from equation 1:

    { - (4 x) + 0 y = 8 | (equation 1)

    0 x+y = - 3 | (equation 2)

    Divide equation 1 by - 4:

    {x+0 y = - 2 | (equation 1)

    0 x+y = - 3 | (equation 2)

    Collect results:

    Answer: {x = - 2, y = - 3
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