Question

б и г нужно быстро рлиз

Answer 1

Решение - на фотографии.  

Answer 2

б) 
$frac{3}{8}*5+frac{5}{56}-frac{1}{7}:frac{1}{5}=frac{15}{8}+frac{5}{56}-frac{1}{7}*5=frac{105}{56}+frac{5}{56}-frac{5}{7}=frac{110}{56}-frac{40}{56}=1,25$;

г) 
$frac{4}{5}:frac{5}{8}-frac{4}{5}*frac{24}{25}+frac{1}{25}:frac{5}{4}=frac{4}{5}*frac{8}{5}-frac{4}{5}*frac{24}{25}+frac{1}{25}*frac{4}{5}=frac{4}{5}(frac{8}{5}-frac{24}{25}+frac{1}{25})=\frac{4}{5}(frac{40}{25}-frac{23}{25})=frac{4}{5}*frac{17}{25}=frac{68}{125}$.