(16a^6b^8-24ab^9)/4a^6b^8
(4-6ab^1)/a^6b
Hope this helps :)
Answer:
26.5 
Step-by-step explanation:
Given: Times for running Boston Marathon= 
Speed= 
Now, finding the distance covered in Boston Marathon.
Distance covered= 
Distance covered = 
∴ Distance covered in the Boston Marathon is 26.5 
The answer is 14n+3. Let me know if this is wrong