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Equations & Systemshard
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The system {2x+y−z=44x+2y−2z=8\begin{cases} 2x + y - z = 4 \\ 4x + 2y - 2z = 8 \end{cases}{2x+y−z=44x+2y−2z=8​ has infinitely many solutions. Which of the following is a particular solution (x,y,z)(x, y, z)(x,y,z)?