[Mathematical Solutions]
1.) [tex]\frac{2}{7} + \frac{1}{4} = \frac{15}{28}[/tex]
2.) [tex]\frac{5}{9} +\frac{3}{8} = \frac{67}{72}[/tex]
3.) [tex]3\frac{5}{6} - 2\frac{7}{15} =\frac{41}{30}[/tex] as the Exact Form, or [tex]1\frac{11}{30}[/tex] as the Mixed Number Form.
Hope this helps!
