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4 September, 13:04

X + 4y = - 6

2x - 5y = 1

+4
Answers (1)
  1. 4 September, 13:23
    0
    x=-2

    y=-1

    Step-by-step explanation:

    x+4y=-6

    -4y to both sides

    x=-6-4y

    2x-5y=1

    add 5y to both sides

    2x=1+5y

    divide both sides by 2

    x=1/2+5/2y

    set equal to each other

    -6-4y=1/2+5/2y

    add 6 to both sides

    -4y=6 1/2+5/2y

    subtract 5/2y from both sides

    -13/2y=6 1/2

    divide by - 13/2 on both sides

    y = - 1

    plug that into original equation

    x+4 (-1) = -6

    x-4=-6

    add 4 to both sides

    x=-2

    (you can check your answer by plugging both back into your original problem and seeing if it equals out)
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