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3 September, 14:02

Solve the system of linear equations by elimination. 5x=4y+8 5x=4y+8 3y=3x-3

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  1. 3 September, 15:44
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    Solve the following system using elimination:

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

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

    Express the system in standard form:

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

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

    Add 3/5 * (equation 1) to equation 2:

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

    {0 x + (3 y) / 5 = 9/5 | (equation 2)

    Multiply equation 2 by 5/3:

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

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

    Add 4 * (equation 2) to equation 1:

    {5 x+0 y = 20 | (equation 1)

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

    Divide equation 1 by 5:

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

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

    Collect results:

    Answer: {x = 4

    {y = 3
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