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4 February, 02:42

X+y=1

x+3y=9

Solve

(First answer gets brainliest)

+3
Answers (2)
  1. 4 February, 03:38
    0
    X+3Y=9

    -X+Y=1

    2Y=8

    Y=4

    X+4=1

    X=-3
  2. 4 February, 03:41
    0
    X + y = 1

    x + 3y = 9

    Subtract the second equation from the first.

    -2y = - 8

    divide both sides by - 2

    y = 4

    Plug 4 back into either equation and solve for x.

    x + y = 1

    x + 4 = 1

    subtract 4 from each side

    x = - 3

    (-3, 4)
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