3/5 4/7; 8/15 11/20; сравните дроби! Срочно надо
3/5 = 21/35 4/7 = 20/35 21/35 > 20/35 => 3/5 > 4/7 8/15 = 32/60 11/20 = 33/60 33/60 > 32/60 => 11/20 > 8/15