(n/2m - n + 2m/2m + n) : 4m^2 + n^2 / 2m - n
(n/2m - n + 1 + n) : 4m^2 + n^2 / 2m - n
(2n/2m + 1) : 4m^2 + n^2 / 2m - n
(n/m + 1) : 4m^2 + n^2 / 2m - n
(n/2m - n + 2m/2m + n) : 4m^2 + n^2 / 2m - n
(n/2m - n + 1 + n) : 4m^2 + n^2 / 2m - n
(2n/2m + 1) : 4m^2 + n^2 / 2m - n
(n/m + 1) : 4m^2 + n^2 / 2m - n