[tex]\displaystyle\\
a)~~- \frac{5}{2};~-1,5;~x;~y;~0;~\frac{3}{2};~ \frac{5}{2}\\\\
\Longrightarrow~ -1,5\ \textless \ x\ \textless \ y\ \textless \ 0\\\\
\boxed{x=-1;~\text{si}~y=-0,5} \\\\
\text{Rezulta sirul:}\\\\
\boxed{- \frac{5}{2};~-1,5;~-1;~-0,5;~0;~\frac{3}{2};~ \frac{5}{2}}\\\\\\
b)~~-\frac{7}{2};~-1,(6);~x;~0;~\frac{1}{4};~y;~\frac{11}{5}\\\\
\Longrightarrow~-1,(6)\ \textless \ x\ \textless \ 0\ \textless \ \frac{1}{4}\ \textless \ y\ \textless \ \frac{11}{5}\\\\
\boxed{x=-1;~\text{si}~y=1} \\\\
\text{Rezulta sirul:}\\\\
\boxed{-\frac{7}{2};~-1,(6);~-1;~0;~\frac{1}{4};~1;~\frac{11}{5}}[/tex]