[tex]0,7 + \frac{1}{20} =0,7+\frac{5}{100} = 0,7+0,05=0,75\\\\3,6 : \frac{3}{5} - 1\frac{1}{5} =3\frac{6}{10}:\frac{3}{5}- 1\frac{1}{5}}=\frac{\not36\ ^{12}}{\not10\ _2}\times \frac{\not5\ ^1}{\not3\ ^1}-1\frac{2}{10}=6-1,2=4,8\\\\ 1\frac{3}{4} : 14*0,5=\frac{\not7\ ^1}{4}\times \frac{1}{\not14\ ^2}\times\frac{5}{10}=\frac{1}{8}\times\frac{1}{2}=\frac{1}{16}[/tex]
[tex](5-1\frac{1}{2}) :(2\frac{3}{8}-1,75 )=3,5:(2\frac{3}{8}-1\frac{3}{4})=3\frac{1}{2}:(\frac{19}{8}-\frac{7}{4})=\frac{7}{2} :(\frac{19}{8}-\frac{14}{8})=\frac{7}{\not2\ _1}\times\frac{\not8\ ^4}{3} =\frac{28}{7} =4[/tex]
