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3 January, 08:02

What is the 4x - 3y = 6

X + 2y = - 15

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Answers (1)
  1. 3 January, 08:51
    0
    x = - 3, y = - 6

    Step-by-step explanation:

    Solve the following system:

    {4 x - 3 y = 6 | (equation 1)

    {x + 2 y = - 15 | (equation 2)

    Subtract 1/4 * (equation 1) from equation 2:

    {4 x - 3 y = 6 | (equation 1)

    {0 x + (11 y) / 4 = (-33) / 2 | (equation 2)

    Multiply equation 2 by 4/11:

    {4 x - 3 y = 6 | (equation 1)

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

    Add 3 * (equation 2) to equation 1:

    {4 x+0 y = - 12 | (equation 1)

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

    Divide equation 1 by 4:

    {x+0 y = - 3 | (equation 1)

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

    Collect results:

    Answer: {x = - 3, y = - 6
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