Решите систему уравнений:
\(\displaystyle\begin{aligned}\begin{cases}3(x-5)-1=6-2x{\small,}\\3(x-y)-7y=-4{\small.}\end{cases}\end{aligned}\)
\(\displaystyle x=\) [ ] \(\displaystyle ;\)\(\displaystyle y=\)[ ]\(\displaystyle .\)