Question 70
Compute all ordered triples $(x, y, z)$ of real numbers satisfying the following system of equations:
$$
\begin{array}{r}
x y+z=40 \\
x z+y=51 \\
x+y+z=19 .
\end{array}
$$
$$
\begin{array}{r}
x y+z=40 \\
x z+y=51 \\
x+y+z=19 .
\end{array}
$$