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Mathematics, 21.11.2019 22:31 russboys3

С. х - 3у - 6z = 21
3х +2y - 5z = -30
2х - 5у +2 = -6

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С. х - 3у - 6z = 21
3х +2y - 5z = -30
2х - 5у +2 = -6...
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