Question

Помогите решить
$9 frac{2}{7}- 5frac{4}{6} , 7frac{1}{9}-5 frac{7}{12}, 8frac{5}{9} - 7frac{x}{y} 9 frac{2}{5} - 6 frac{5}{8}$

Answer 1

$9 frac{2}{7} -5 frac{4}{6} =9 frac{12}{42} -5 frac{28}{42} =3 frac{54-28}{42} =3 frac{26}{42} =3 frac{13}{21} \\ 7 frac{1}{9} -5 frac{7}{12} =7 frac{4}{36} -5 frac{21}{36} =1 frac{40-21}{36} =1 frac{19}{36} \\ 8 frac{5}{9} -7 frac{7}{10} =8 frac{50}{90} -7 frac{63}{90} = frac{140-63}{90} = frac{77}{90} \\ 9 frac{2}{5} -6 frac{5}{8} =9 frac{16}{40} -6 frac{25}{40} =2 frac{56-25}{40}=2 frac{31}{40}$

Answer 2

Спасибо)