Question
यदि आव्यूह $\left[\begin{array}{c}x+y+z \\ x+z \\ y+z\end{array}\right]=\left[\begin{array}{l}9 \\ 5 \\ 7\end{array}\right]$ तो $x, y$ व $z$ का मान ज्ञात कीजिए।
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