Solve the systems in Problems 13-16 by graphing, adding, substitution, Gauss-Jordan, or inverse matrix methods. (left{begin{array}{l}x+y+z=5

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Solve the systems in Problems 13-16 by graphing, adding, substitution, Gauss-Jordan, or inverse matrix methods.

\(\left\{\begin{array}{l}x+y+z=5 \\ x-2 y+z=-1 \\ 3 x+y-2 z=16\end{array}\right.\)

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