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20 October, 05:08

2x-4y=4

-3x+10y=14

solve each system of equations using the linear combinations method

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Answers (1)
  1. 20 October, 08:26
    0
    2x - 4y = 4 ⇒ - 6x + 12y = - 12

    -3x + 10y = 14 ⇒ - 6x + 20y = 28

    -8y = 16

    -8 - 8

    y = - 2

    2x - 4 (-2) = 4

    2x + 8 = 4

    -8 - 8

    2x = - 4

    2 2

    x = - 2

    (x, y) = (-2, - 2)
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