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16 September, 10:41

Y=2x+9

y=6-x

what is the solution?

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Answers (1)
  1. 16 September, 10:46
    0
    Step-by-step explanation:

    y=2x+9

    y=6-x

    (y-2x=9) (-1)

    y+x=6

    -y+2x=-9

    y+x=6

    3x=-3

    x=-3/3=-1

    sub x=-1 in eq 1

    y-2 (-1) = 9

    y+2=9

    y=9-2=5

    so (-1; 5) is the only solution for this system

    (hope it's correct)
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