Respuesta :

[tex]\\ \rm\rightarrowtail \dfrac{4}{5}n-\dfrac{3}{5}=\dfrac{1}{5}n[/tex]

[tex]\\ \rm\rightarrowtail \dfrac{4}{5}n-\dfrac{1}{5}n=\dfrac{3}{5}[/tex]

[tex]\\ \rm\rightarrowtail \dfrac{3}{5}n=\dfrac{3}{5}[/tex]

[tex]\\ \rm\rightarrowtail n=1[/tex]