Odpowiedź:
[tex]a) 1\frac{2}{7} :\frac{4}{5}=\frac{9}{7} *\frac{5}{4}=\frac{45}{28}=1\frac{17}{28} \\b)2\frac{7}{10} :1\frac{2}{7}=\frac{27}{10} :\frac{9}{7} =\frac{27}{10} *\frac{7}{9} =\frac{189}{90}=2\frac{9}{90} =2\frac{1}{10} \\c)3\frac{3}{4} :1\frac{7}{8} =\frac{15}{4} :\frac{15}{8} =\frac{15}{4} *\frac{8}{15} =2[/tex]
