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$[\begin{array}{c} x + 2 y + 3 z \\ 2 x + 3 y + 2 z \\ - 1 - 2 y - 4 z \end{array}]$

Bước 1

Transpose the matrix by switching its rows to columns.

$[\begin{array}{c} x + 2 y + 3 z & 2 x + 3 y + 2 z & - 1 - 2 y - 4 z \end{array}]$