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16 November, 17:29

X+3y-z=2

x+y-z=0

3x+2y-3z=-1

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Answers (1)
  1. 16 November, 17:40
    0
    Add the equations in order to solve for the first variable. Plug these values to solve for the other variables:

    X=x

    Y=1

    x=z-1
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