Рещите систему неравенств

1. $\left \{ {{7+2x\ \textgreater \ 5+x} \atop {3x+2\ \textless \ 8+x}} \right. ; \left \{ {{2x-x\ \textgreater \ 5-7} \atop {3x-x\ \textless \ 8-2}} \right. ; \left \{ {{x\ \textgreater \ -2} \atop {2x\ \textless \ 6}} \right. ; \left \{ {{x\ \textgreater \ -2} \atop {x\ \textless \ 3}} \right. ; -2\ \textless \ x\ \textless \ 3$

3. $\left \{ {{0.4x-1\ \textless \ 0,5x-1,7} \atop {2.7x-10\ \textless \ 0.9x-1}} \right. ; \left \{ {{0.4x-0.5x\ \textless \ -1.7+1} \atop {2.7x-0.9x\ \textless \ -1+10}} \right. ; \left \{ {{-0.1x\ \textless \ -0.7} \atop {1.8x\ \textless \ 9}} \right. ; \left \{ {{x\ \textgreater \ 7} \atop {x\ \textless \ 5 }} \right. ; 5\ \textless \ x\ \textless \ 7$