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Considere a sistema linear abaixo e escolha todas as alternativas corretas.
\left[ \begin {array}{cccc} -1&0&-1&3\\ 4&2&2&-2\\ 1&1&3&5\end {array} \right]
\left[\begin {array}{c} x\\ y\\ z\\ w\end {array} \right] =
\left[\begin {array}{r} -1\\ 1\\ -1\end {array} \right]