Question 133971
I'll assume the problem is given as:
{{{(w+r)/wr^2 + (4w+r)/w^2r}}}

Get to a common denominator.
{{{(w*(w+r))/(w^2r^2) + (r*(4w+r))/(w^2r^2)}}}
{{{(w^2+wr)/(w^2r^2) + (4rw+r^2)/(w^2r^2)}}}
{{{(w^2+4rw+r^2)/(w^2r^2)}}}