Ответ:
а) 
10} \atop {3x-5>1}} \right." alt="\left \{ {{4x-10>10} \atop {3x-5>1}} \right." align="absmiddle" class="latex-formula">
5} \atop {x>2}} \right." alt="\left \{ {{x>5} \atop {x>2}} \right." align="absmiddle" class="latex-formula">
∈ 
+∞
б) 
2} \atop {1,4 + x>1,5} \right." alt="\left \{ {{5-2x >2} \atop {1,4 + x>1,5} \right." align="absmiddle" class="latex-formula">
0,1}} \right." alt="\left \{ {{x<\frac{3}{2} } \atop {x>0,1}} \right." align="absmiddle" class="latex-formula">
\frac{1}{10} }} \right." alt="\left \{ {{x<\frac {3} {2} } \atop {x> \frac{1}{10} }} \right." align="absmiddle" class="latex-formula">
∈ 