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\[\begin{aligned}&x+y-z=-2\\&z+2x-y=5\\&-x+2y+2z=1\end{aligned}\]
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x+y-z=-2;z+2x-y=5;-x+2y+2z=1
x+y-z=-2,z+2x-y=5,-x+2y+2z=1
\begin{aligned}&x+y-z=-2\\&z+2x-y=5\\&-x+2y+2z=1\end{aligned}
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