Решите систему уравнений:

\(\displaystyle\begin{aligned}\begin{cases}\dfrac{2a+1}{7}+\dfrac{2b+2}{5}=\dfrac{1}{5}{\small,}\\\\\dfrac{3a-2}{2}+\dfrac{b+4}{4}=4{\small.}\end{cases}\end{aligned}\)

\(\displaystyle a=\) [ ] \(\displaystyle ;\)\(\displaystyle b=\)[ ]\(\displaystyle .\)