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29 March, 13:37

Find the solution to the system of equations.

x - 2y - z = - 2

x+2y+

z = 0

y + 3z = 3

A. x=-1, y = 0, z = 3

B. x = - 1, y=-1, z = 0

C. x=-1, y=1, z = 1

D. x=-1, y = 0, z = 1

+2
Answers (1)
  1. 29 March, 15:54
    0
    => D

    X-2y-z=-2

    X+2y+z=0

    Y+3z=3

    2x=-2

    X=-1

    (-1) + 2y+z=0

    2y+z=1

    Z=-2y+1

    Y+3 (-2y+1) = 3

    Y-6Y+3=3

    -5y=0

    Y=0

    Y+3z=3

    0+3z=3

    Z=1
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