a) 2/5 < 3/7
b) 1 < 11/6 < 2
a) \(\frac{x}{5}< \frac{3}{7}\)
\(\Rightarrow x< \frac{15}{7}\)
\(\Rightarrow x< 2\frac{1}{7}\)
\(\Rightarrow\) x = 0 ; 1 ;2
b) \(1< \frac{11}{x}< 2\)
\(\Rightarrow\frac{11}{11}< \frac{11}{x}< \frac{11}{5,5}\)
\(\Rightarrow11>x>5,5\)
\(\Rightarrow x=10;9;8;7;6\)