Question 251445
15a^5  /  5a^3
_____     ____

12b^7     3b^2
(15a^5/12b^7)*(3b^2/5a^3)
45a^5b^2/60a^3b^7
3a^(5-3)/4b^(7-2) 
3a^2/4b^5 ans.