Question

) 4) 13 11:22 2. 4 13 6) 13 4 :1 14 21 5 16 8) 2 19 2 21:3 3 3 8

Answer 1

$\displaystyle 1)13\frac{1}{2}*1\frac{1}{2}:2\frac{1}{4}=\frac{27}{2}*\frac{3}{2}:\frac{9}{4}=\frac{27}{2}*\frac{3}{2}*\frac{4}{9}=3*\frac{3}{2}*2=3*3=9\\\\ 2)\frac{13}{14}:1\frac{4}{21}:\frac{13}{5}=\frac{13}{14}:\frac{25}{21}*\frac{5}{13}=\frac{1}{14}*\frac{21}{25}*5=\frac{1}{2}*\frac{3}{5}=\frac{3}{10}=0,3\\\\ 3)2\frac{16}{19}*2\frac{1}{9}:3\frac{3}{8}=\frac{54}{19}*\frac{19}{9}:\frac{27}{8}=6*\frac{8}{27}=2*\frac{8}{9}=\frac{16}{9}=1\frac{7}{9}$