n=13
Substitute n=13 into the equation:
m+5+13m+5+13m+5+13/4 = m+18/4 = m+4.5
Since m < 5, the largest possible value for n would be when m=4, which would make n=13.
n=13
Substitute n=13 into the equation:
m+5+13m+5+13m+5+13/4 = m+18/4 = m+4.5
Since m < 5, the largest possible value for n would be when m=4, which would make n=13.