Пожалуйста, помогите!
Сравните дроби :
7/10 и 13/20 , 2/3 и 5/8 , 7/10 и 3/4 ; 7/9 и 5/6 ; 7/15 и 9/20

1) $frac{7}{10}= frac{14}{20} ; frac{14}{20} textgreater frac{13}{20}; frac{7}{10} textgreater frac{13}{20}$
2) $frac{2}{3}= frac{16}{24}; frac{5}{8}= frac{15}{24}; frac{16}{24} textgreater frac{15}{24}; frac{2}{3} textgreater frac{5}{8}$
3) $frac{7}{10}= frac{14}{20}; frac{3}{4}= frac{15}{20}; frac{14}{20} textless frac{15}{20}; frac{7}{10} textless frac{3}{4}$
4) $frac{7}{9}= frac{14}{18}; frac{5}{6}= frac{15}{18}; frac{14}{18} textless frac{15}{18}; frac{7}{9} textless frac{5}{6}$
5) $frac{7}{15}= frac{28}{60}; frac{9}{20}= frac{27}{60}; frac{28}{60} textgreater frac{27}{60}; frac{7}{15} textgreater frac{9}{20}$