[tex]b)\\\\3\frac{1}{4} *\frac{4}{5}*\frac{15}{26}=\frac{\not{13}^1}{\not{4}^1} *\frac{\not{4}^1}{\not{5}^1}*\frac{\not{15}^3}{\not{26}^2}=\frac{3}{2}=1\frac{1}{2}\\\\\\e)\\\\ 3\frac{2}{3} *1\frac{3}{5}* \frac{2}{11}*6\frac{1}{4}* \frac{1}{10}*4\frac{2}{7}= \frac{\not{11}^1}{3} * \frac{\not{8}^2}{\not{5}^1}* \frac{2}{\not{11}^1}* \frac{\not{25}^5}{\not{4}^1}* \frac{1}{\not{10}^1}* \frac{\not{30}^3}{7}=\frac{60}{21} =\frac{20}{7}=2\frac{6}{7}[/tex]
