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28 July, 01:26

2x+y-3z=0

-2x+2y+z=-7

3x-4y-3z=7

+5
Answers (1)
  1. 28 July, 01:29
    0
    [x, y, z]=[-4,11,-21] this or this / left[x / right] = / left[ / frac{y}{4}+z/right][x]=[

    4

    y

    +z] this [x]=[0.25y+z]
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