Răspuns :
Presupunem prin absurd ca 1/7 mai mare ca 7/8
[tex] \frac{1}{7} \ \textgreater \ \frac{7}{8}[/tex]⇔
8>49 => Fals
Deci [tex]\frac{1}{7}[/tex] < [tex]\frac{7}{8}[/tex].
[tex] \frac{1}{7} \ \textgreater \ \frac{7}{8}[/tex]⇔
8>49 => Fals
Deci [tex]\frac{1}{7}[/tex] < [tex]\frac{7}{8}[/tex].