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25 July, 23:15

Solve this system of linear equations: 4x-2y=8 Y=3/2x-2

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Answers (1)
  1. 26 July, 00:52
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    x = 4, y = 4

    Step-by-step explanation:

    Solve the following system:

    {4 x - 2 y = 8 | (equation 1)

    y = (3 x) / 2 - 2 | (equation 2)

    Express the system in standard form:

    {4 x - 2 y = 8 | (equation 1)

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

    Add 3/8 * (equation 1) to equation 2:

    {4 x - 2 y = 8 | (equation 1)

    0 x+y/4 = 1 | (equation 2)

    Divide equation 1 by 2:

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

    0 x+y/4 = 1 | (equation 2)

    Multiply equation 2 by 4:

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

    0 x+y = 4 | (equation 2)

    Add equation 2 to equation 1:

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

    0 x+y = 4 | (equation 2)

    Divide equation 1 by 2:

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

    0 x+y = 4 | (equation 2)

    Collect results:

    Answer: {x = 4, y = 4
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