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3 October, 07:02

The linear combination method is applied to a system of equations as shown. 4 (.25x. 5y = 3.75) → x 2y = 15 (4x - 8y = 12) → x - 2y = 3 2x = 18what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

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  1. 3 October, 07:32
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    If we use the last equation:

    2 x = 18

    x = 18 : 2

    x = 9

    Then we will put it in another equation:

    x - 2 y = 3

    9 - 2 y = 3

    - 2 y = 3 - 9

    - 2 y = - 6

    y = - 9 : (-3)

    y = 3.

    The solution is : D) (9, 3)
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