Mathematics, 10.02.2021 20:00 kileykittykt8184
\:\begin{pmatrix}1&2&3\\ \:1&1&1\\ \:0&2&1\end{pmatrix}\begin{ pmatrix}6\\ \:-2\\ \:5\end{pmatrix}\:-R1+R2→\:R2
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\:\begin{pmatrix}1&2&3\\ \:1&1&1\\ \:0&2&1\end{pmatrix}\begin{ pmatrix}6\\ \...
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