Question

найдите неизвестный член пропорции

Answer 1

$x: frac{6}{7}= frac{7}{6}: frac{5}{2} \ x= frac{frac{7}{6}*frac{6}{7}}{ frac{5}{2}}= frac{2}{5}$

Answer 2

$x: frac{6}{7} = 1frac{1}{6} : 2frac{1}{2} \ \ x = frac{6}{7} * 1frac{1}{6} : 2frac{1}{2} \ \ x= frac{6*7*2}{7*6*5} \ \ x= frac{2}{5}$