三元一次方程组\(\left\{ {\begin{array}{*{20}{l}} {x + y = 5} \\\ {y + z = 9} \\\ {z + x

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三元一次方程组\(\left\{ {\begin{array}{*{20}{l}} {x + y = 5} \\ {y + z = 9} \\ {z + x = 8} \end{array}} \right.\)的解是___。

参考答案：\(\left\{ {\begin{array}{*{20}{l}} {x = 2} \\ {y = 3} \\ {z = 6} \end{array}} \right.\)