Anonymous
Anonymous asked in Science & MathematicsMathematics · 9 years ago

Solve: 2(x-y)=5+2y and 2(x+y)=5-2x ?

Please help fast!

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  • iceman
    Lv 7
    9 years ago
    Favorite Answer

    2(x-y)=5+2y

    2(x+y)=5-2x

    2x - 2y - 2y = 5

    2x + 2y + 2x = 5

    2x - 4y = 5

    8x + 4y = 10

    10x = 15

    x = 15/10 = 3/2

    y = -1/2

  • 9 years ago

    Simplify to 2x - 4y = 5 and 4x + 2y = 5

    2 4 = 5

    4 2 = 5

    1 0 = 0.8333

    0 1 = 0.8333

    Source(s): linear algebra, systems of equations
  • None
    Lv 7
    9 years ago

    2x - 2y = 5 + 2y => 2x - 4y = 5......(1)

    2x + 2y= 5 - 2x => 4x + 2y= 5......(2)

    Add twice (2) to (1)

    10x = 15

    x = 3/2 and therefore y = - 1/2

  • Anonymous
    9 years ago

    2(x-y)=5+2y

    2x-2y=5+2y

    2x=5+2y+2y

    2x=5+4y

    2(x+y)=5-2x

    2x+2y=5-2x

    2x+2x=5-2y

    4x=5-2y

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