14/27:7/9,3,5:1ц4/11,5/8:40

[latex] \frac{14}{27}: \frac{7}{9} = \frac{14}{27}* \frac{9}{7}= \frac{2*7*9}{3*9*7}= \frac{2}{3} [/latex] [latex]3,5: 1\frac{4}{11}= 3\frac{5}{10} : 1\frac{4}{11}= \frac{35}{10} : \frac{15}{11}= \frac{35}{10}* \frac{11}{15}= \frac{5*7*11}{2*5*3*5}= \frac{77}{30}=2 \frac{17}{30} [/latex] [latex] \frac{5}{8}:40= \frac{5}{8}* \frac{1}{40} =\frac{5*1}{8*8*5}= \frac{1}{64} [/latex]