# AM-GM might help out

**Algebra**Level 4

If \(\displaystyle x,y,z\in\mathbb R\) are positive, solve \[\displaystyle\begin{cases}x+\frac{1}{yz}+z^2=3\\y+\frac{1}{xz}=2\end{cases}\]

The solutions are \(\displaystyle (x_1,y_1,z_1), (x_2,y_2,z_2),\ldots, (x_n,y_n,z_n)\).

Find \(\displaystyle\sum_{i=1}^n (x_i+y_i+z_i)\).