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27 September, 22:51

Find the solution for this system of equations.

2x + 4y = 8

x = 3y - 6

+1
Answers (1)
  1. 27 September, 23:08
    0
    x = 0, y = 2

    Step-by-step explanation:

    Solve the following system:

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

    x = 3 y - 6 | (equation 2)

    Express the system in standard form:

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

    x - 3 y = - 6 | (equation 2)

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

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

    0 x - 5 y = - 10 | (equation 2)

    Divide equation 1 by 2:

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

    0 x - 5 y = - 10 | (equation 2)

    Divide equation 2 by - 5:

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

    0 x+y = 2 | (equation 2)

    Subtract 2 * (equation 2) from equation 1:

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

    0 x+y = 2 | (equation 2)

    Collect results:

    Answer: {x = 0, y = 2
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