Сравните дроби  12/11 и 20/21  10/11 и 7/8 3/8 и 5/12              

[latex] \frac{12}{11} >\frac{20}{21} \\\ \frac{10}{11}> \frac{7}{8} \\\ \frac{3}{8} > \frac{5}{12} [/latex]