Solve system of equations by elimination or subsitution.?

5x+3y=-4

2x-4y=14

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  • Anonymous
    1 decade ago
    Favorite Answer

    Use substitution:

    2x = 4y+14

    x = 2y+7

    5(2y+7) +3y= -4

    10y + 35 + 3y = -4

    13y = -39

    y = -3

    5x - 9 = -4

    5x = 5

    x = 1

    Check:

    2(1) - 4(-3) = 14

    2 + 12 = 14

    14 = 14

    Answer = (1, -3)

    Source(s): my brain
  • 1 decade ago

    2x - 4y = 14

    x - 2y = 7

    x = 2y + 7

    5(2y + 7) + 3y = 4

    13y = -31

    y = -31/13 x =29/13

  • 1 decade ago

    elimination

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