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2 November, 19:48

Which ordered pair (x, y) is the solution to the given system of linear equations?

3x+3y=-3

-2x+y=2

+4
Answers (2)
  1. 2 November, 20:08
    0
    Answer: (-1,0)

    Step-by-step explanation:

    3x + 3y=-3. Solve by the elimination method.

    -2x+y=2

    2 (3x + 3y) = -3 (2) New equation 6x + 6y=-6

    3 (-2 + y) = 2 (3). New equation - 6x + 3y=6

    9y = 0

    y=0

    6x + 6 (0) = -6

    6x = -6

    X=-1
  2. 2 November, 20:11
    0
    (-1,0)

    y=2x+2 * new equation for second*

    3x+3 (2x+2) = -3 * plug y into first equation*

    3x + (6x+6) = -3 * combine like terms*

    9x+6=-3 * bring 6 to the other side by subtracting 6 on both sides*

    9x = - 9 * divide by 9 to get x by itself*

    x = - 1

    to find y (now that we have x):

    -2 (-1) + y=2

    2+y=2

    y=0
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