3. Solve the system of equations:

$$
\left\{\begin{aligned}
x+y-2018 & =(y-2019) \cdot x \\
y+z-2017 & =(y-2019) \cdot z \\
x+z+5 & =x \cdot z
\end{aligned}\right.
$$
Answer: (3, 2021, 4), ( $-1,2019,-2)$.

Solution: a similar solution to this problem is present in variant 1 under the same number. Note: 1 point for each correct solution found by trial and error.