Question

вычислите 5/9:2/7 3/7:21 3:5 7/18:14/27 15:3/5 6:12

Answer 1

$frac{5}{9} * frac{7}{2} = frac{5*7}{9*2}= frac{35}{18}=1 frac{17}{18}$

$frac{3}{7}* frac{1}{21}= frac{3}{7*21}= frac{3}{147}$

$frac{3}{5} =frac{3}{5}$

$frac{7}{18} * frac{27}{14} = frac{9}{6*2}= frac{3}{2*2} = frac{3}{4}$

$15* frac{5}{3}= frac{5*5}{1}=25$

$frac{6}{12}= frac{3}{6}= frac{1}{2}$