Question

помогите пожалуйста по математике номер 834

Answer 1

$1) frac{11}{22}= frac{1}{2}, frac{10}{25}= frac{2}{5}, frac{27}{45}= frac{3}{5}, frac{9}{12}= frac{3}{4};$
$2) frac{15}{18}= frac{5}{6},frac{24}{30}=frac{4}{5},frac{28}{32}=frac{7}{8},frac{21}{15}=frac{7}{5};$
$3)frac{75}{45}=frac{5}{3},frac{38}{66}=frac{19}{33},frac{54}{90}=frac{6}{10}=frac{3}{5},frac{36}{84}=frac{6}{14}=frac{3}{7};$
$4)frac{49}{56}=frac{7}{8},frac{55}{77}=frac{5}{7},frac{26}{65}=frac{2}{5},frac{51}{85}=frac{3}{5}.$