[tex]\frac{2}{7} + 1\frac{3}{7} = 1\frac{5}{7}[/tex]
[tex]4* \frac{3}{5} = \frac{12}{5} =2 \frac{2}{5}[/tex]
[tex]\frac{3}{4} - \frac{1}{5} =\\\frac{15}{20} - \frac{4}{20} = \frac{11}{20}[/tex]
[tex]1\frac{2}{3} : \frac{5}{6} \\\frac{5}{3} * \frac{6}{5} \\skracamy\\\frac{6}{3} = 2[/tex]
:)
