we are given
[tex] \frac{4}{5}n -\frac{1}{5} =\frac{2}{5}n [/tex]
Firstly , we will multiply both sides by 5
[tex] 5*\frac{4}{5}n -5*\frac{1}{5} =5*\frac{2}{5}n [/tex]
now, we can simplify it
[tex] 4n-1 =2n [/tex]
[tex] 2n =1 [/tex]
now, we can solve for n
[tex] n =\frac{1}{2} [/tex].............Answer