Verified answer

1)

[tex]x=\frac{7}{15} +\frac{7}{30} +\frac{4}{5} =\frac{14}{30} +\frac{7}{30} +\frac{24}{30} =\frac{45}{30} =\frac{3}{2}[/tex]

[tex]y=2-\frac{1}{3} -\frac{1}{2} =\frac{12}{6} -\frac{2}{6} -\frac{3}{6}=\frac{7}{6}[/tex]

[tex]\frac{x}{y} =\frac{3}{2} :\frac{7}{6} =\frac{3}{2} *\frac{6}{7} =\frac{9}{7} =1\frac{2}{7}[/tex]

2)

[tex]x=\frac{1}{6} +\frac{1}{10} +\frac{1}{15} =\frac{5}{30} +\frac{3}{30} +\frac{2}{30} =\frac{10}{30} =\frac{1}{3}[/tex]

[tex]y=\frac{3}{5} -\frac{1}{3} -\frac{1}{4} =\frac{36}{60} -\frac{20}{60} -\frac{15}{60} =\frac{1}{60}[/tex]

[tex]\frac{x}{y} =\frac{1}{3} :\frac{1}{60} =\frac{1}{3} *60=20[/tex]