Помогите, даю 30 баллов
надо срочно
49.5

$frac{4}{3*12} = frac{4}{36} = frac{1}{9}$
$frac{6}{7*12} = frac{6}{84} =frac{1}{14}$
$frac{15}{9*5} = frac{5}{45} frac{1}{9}$
$frac{21}{8*14} = frac{21}{112} = frac{3}{16}$
$frac{23}{22*5} = frac{23}{110}$
$frac{25*25}{15*16} = frac{625}{240} = frac{25}{120} = frac{5}{24}$
$frac{30*40}{50*80} = frac{1200}{4000} = frac{12}{40} = frac{3}{10}$
$frac{36}{48*52} = frac{36}{2496} = frac{3}{208}$