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Mathematics, 20.09.2021 21:20 randlemccray4305

X - 2y + 2z = -2
-x + 4y - 2z = 3
2x - 4y +z = -7

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You know the right answer?
X - 2y + 2z = -2
-x + 4y - 2z = 3
2x - 4y +z = -7...
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