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Mathematics, 07.10.2020 14:01 rosy2019

X + 2y + 3z = 4
- 3x + 2y – z = 12
- 2x – 2y – 4z = - 14

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X + 2y + 3z = 4
- 3x + 2y – z = 12
- 2x – 2y – 4z = - 14...

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