Question 421416
{{{3/(w+3w/(4+1/(w+1)))}}}=
{{{3/(w+3w/(4(w+1)/(w+1)+1/(w+1)))}}}=
{{{3/(w+3w(w+1)/(4w+4+1))}}}=
{{{3/((w(4w+5))/(4w+5)+3w(w+1)/(4w+5))}}}=
{{{3(4w+5)/(4w^2+5w+3w^2+3w)}}}=
{{{(12w+15)/(7w^2+8w)}}}