Convert into fractions with equivalent denominators.
[tex]\frac{5}{8}=\frac{45}{72}[/tex]
[tex]\frac{3}{9}=\frac{24}{72}[/tex]
[tex]y+\frac{24}{72}=\frac{45}{72}[/tex]
[tex]y=\frac{21}{72}[/tex]
[tex]y=\frac{7}{24}[/tex]
Hope this helps.
頑張って!