Question

решите пожалуйста 5 класс

Answer 1

$(3frac{1}{3}+5 frac{1}{6})* frac{2}{5}-2 frac{3}{4}:( 1frac{1}{2}- frac{2}{5})= (3frac{2}{6}+5 frac{1}{6})* frac{2}{5}-2 frac{3}{4}:( 1frac{5}{10}- frac{4}{10})= \ = 8frac{3}{6}* frac{2}{5}-2 frac{3}{4}:1frac{1}{10}=8frac{1}{2}* frac{2}{5}-2 frac{3}{4}:1frac{1}{10}=frac{17}{2}* frac{2}{5}-frac{11}{4}:frac{11}{10}= \ =17* frac{1}{5}-frac{11}{4}*frac{10}{11}=17/5-10/4=3.4-2.5=0.9$

3 1/3*2 2/5+(2-4 4/15*3/17)=4/3*12/5+(2-64/15*3/17)=4/1*3/5+(2-64/5*1/17)=
= 12/5+(2-64/85)=2 2/5+1 21/85= 2 34/85+1 21/85=3 55/85=3 11/17