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9 August, 00:23

What is the solution to the system of equations?

6x+2y = 6

7x+3y=5

(-3, 2)

(-1,6)

(2, - 3)

(6, - 1)

+2
Answers (2)
  1. 9 August, 00:29
    0
    x = 2, y = - 3

    Step-by-step explanation:

    Solve the following system:

    {6 x + 2 y = 6 | (equation 1)

    7 x + 3 y = 5 | (equation 2)

    Swap equation 1 with equation 2:

    {7 x + 3 y = 5 | (equation 1)

    6 x + 2 y = 6 | (equation 2)

    Subtract 6/7 * (equation 1) from equation 2:

    {7 x + 3 y = 5 | (equation 1)

    0 x - (4 y) / 7 = 12/7 | (equation 2)

    Multiply equation 2 by 7/4:

    {7 x + 3 y = 5 | (equation 1)

    0 x - y = 3 | (equation 2)

    Multiply equation 2 by - 1:

    {7 x + 3 y = 5 | (equation 1)

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

    Subtract 3 * (equation 2) from equation 1:

    {7 x+0 y = 14 | (equation 1)

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

    Divide equation 1 by 7:

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

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

    Collect results:

    Answer: {x = 2, y = - 3
  2. 9 August, 00:31
    0
    Answer: C
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