Question 276985
((ab+b^2)/(4ab^5 ))/((a+b)/(6a^2 b^4 )) 
= (ab + b^2)/(4ab^5) * (6a^2 b^4)/(a + b)
= (3a(ab + b^2))/(2b(a+b))
= (3ab(a + b))/(2b(a + b))
= {{{3a/2}}}