SOLUTION: I have tried this problem over and over but each time my professor tells me that it's wrong. Can you help me figure out what i am doing wrong? 3/n + 6/n - 1/4 My answers so f

Algebra ->  Expressions-with-variables -> SOLUTION: I have tried this problem over and over but each time my professor tells me that it's wrong. Can you help me figure out what i am doing wrong? 3/n + 6/n - 1/4 My answers so f      Log On


   



Question 580845: I have tried this problem over and over but each time my professor tells me that it's wrong. Can you help me figure out what i am doing wrong?
3/n + 6/n - 1/4
My answers so far:
9/n - 1/4
36/8n - 1/4
36/5n

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
3/n + 6/n - 1/4
-----
9/n - 1/4 is not wrong.
-----------
Common denominator = 4n
--> 12/4n + 24/4n - n/4n
= (36 - n)/4n
---------------