\(x_1-4x_2=5\)

\(0=0\)

\(x_1=5+4x_2\)

\(x_2\), free

\(x_1=5+4t\)

\(x_2=t\)

\(x=\begin{bmatrix}5\\0\end{bmatrix}+t \begin{bmatrix}4 \\1 \end{bmatrix}\)

Question

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