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Mathematics, 12.02.2021 05:20 ladya1613

4)
x+ y + z = 6
3x + 2y + z = 14
4x + 3y + 2z = 20

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4)
x+ y + z = 6
3x + 2y + z = 14
4x + 3y + 2z = 20...
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