Question 874408
{{{(6b/(14a^2))(4a^4b^3/(4a^4b^3)) =24a^4b^4 /56a^6b^3= 3b/(7a^2)}}}

{{{(10d/(5d-10))(5/5)= 50d/ (25d-50) = 2d/(d-2)}}}