Question

СРОЧНО,ЗАДАНИЕ ВО ВЛОЖЕНИИ!!!!!!!!!!!!

Answer 1

$frac{(6,6-3 frac{3}{14})cdot 5 frac{5}{6} }{(21-1.25):2.5} = frac{(6 frac{6}{10} -3 frac{3}{14})cdot frac{35}{6} }{19.75:2.5} = frac{(3 frac{42}{70} - frac{15}{70})cdot frac{35}{6} }{7.9} = \ frac{3 frac{27}{70} cdot frac{35}{6} }{7.9} = frac{ frac{237}{70} cdot frac{35}{6} }{7.9} = frac{ frac{79}{4} }{7.9} = frac{10}{4} =2.5$