Решите систему уравнений:

\(\displaystyle\begin{aligned}\begin{cases}2x-3(2y+1)=15{\small,}\\3(x+1)+3y=2y-2{\small.}\end{cases}\end{aligned}\)

\(\displaystyle x=\) [ ] \(\displaystyle ;\)\(\displaystyle y=\)  [ ]\(\displaystyle .\)