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12 May, 07:35

2x + 5y = 17 and 6x - 5y = - 9 what is the solution of the system use elimination

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Answers (2)
  1. 12 May, 08:08
    0
    {x = 1, y = 3

    Step-by-step explanation:

    Solve the following system: using elimination:

    {2 x + 5 y = 17 | (equation 1)

    {6 x - 5 y = - 9 | (equation 2)

    Swap equation 1 with equation 2:

    {6 x - 5 y = - 9 | (equation 1)

    {2 x + 5 y = 17 | (equation 2)

    Subtract 1/3 * (equation 1) from equation 2:

    {6 x - 5 y = - 9 | (equation 1)

    {0 x + (20 y) / 3 = 20 | (equation 2)

    Multiply equation 2 by 3/20:

    {6 x - 5 y = - 9 | (equation 1)

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

    Add 5 * (equation 2) to equation 1:

    {6 x+0 y = 6 | (equation 1)

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

    Divide equation 1 by 6:

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

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

    Collect results:

    Answer: {x = 1, y = 3
  2. 12 May, 08:19
    0
    x = 8.5 + 2.5y answer one can't figure out answer two. Sorry
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