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16 March, 20:32

2x - y=-1

3x-2y=1

elimination somebody do this for me

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Answers (2)
  1. 16 March, 20:44
    0
    2x-y=-1 (1)

    3x-2y=1 (2)

    (1) * 2--> 4x-2y=-2 (3)

    (3) - (2)

    x = - 3

    sub x = - 3 into (1)

    2 (-3) - y=-1

    -6-y=-1

    -y=5

    y = - 5
  2. 16 March, 20:49
    0
    -2 (2x-y) = - 1

    3x-2y=1

    -4x+2y=2

    3x-2y=1

    -x=3 (x=-3)

    (-3,__)

    2 (-3) - y=-1

    -6-y=-1

    -y=-1+6

    -y=5

    y=-5

    so ... (-3,-5)
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