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18 July, 22:29

Classify the system of equations. 2x + y - 3 = 0 x + y - 1 = 0

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  1. 18 July, 22:49
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    Solve the following system:

    {-3 + 2 x + y = 0 | (equation 1)

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

    Express the system in standard form:

    {2 x + y = 3 | (equation 1)

    {x + y = 1 | (equation 2)

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

    {2 x + y = 3 | (equation 1)

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

    Multiply equation 2 by 2:

    {2 x + y = 3 | (equation 1)

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

    Subtract equation 2 from equation 1:

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

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

    Divide equation 1 by 2:

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

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

    Collect results:

    Answer: {x = 2, y = - 1
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