Respuesta :

[tex]\begin{gathered} =4n+\frac{1}{8}+4y+\frac{1}{8}+9n-3y \\ =13n+\frac{2}{8}+4y-3y \\ =13n+\frac{1}{4}+y \\ =13n+y+\frac{1}{4} \end{gathered}[/tex]