1. 
-\frac{1}{5} \\y> - 0,2\\> - 5 ^{-1}" alt="y> -\frac{1}{5} \\y> - 0,2\\> - 5 ^{-1}" align="absmiddle" class="latex-formula">
y ∈ 
, +∞)
2. 
1 \\" alt="\frac{2y-4}{3} - \frac{y-1}{5} >1 \\" align="absmiddle" class="latex-formula">
15" alt="5(2y-4)-3(y-1)>15" align="absmiddle" class="latex-formula">
15" alt="10y-20-3y+3>15" align="absmiddle" class="latex-formula">
15" alt="7y-17>15" align="absmiddle" class="latex-formula">
15+17" alt="7y>15+17" align="absmiddle" class="latex-formula">
32" alt="7y>32" align="absmiddle" class="latex-formula">
\frac{32}{7}" alt="y>\frac{32}{7}" align="absmiddle" class="latex-formula">
4\frac{4}{7}" alt="y> 4\frac{4}{7}" align="absmiddle" class="latex-formula">
∈ 
+∞)