SOLUTION: how is this rational prob done 3n over 2n+9 subtracted by 6n-5 over 2n+9

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Question 210699: how is this rational prob done
3n over 2n+9 subtracted by
6n-5 over 2n+9
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
3n over 2n+9 subtracted by
6n-5 over 2n+9
:
%283n%29%2F%28%282n%2B9%29%29 - %28%286n-5%29%29%2F%28%282n%2B9%29%29
:
They have the same denominator so we can just write it
%28%283n%29-%286n-5%29%29%2F%28%282n%2B9%29%29
:
remove the brackets (change the sign of 5)
%28%283n-6n%2B5%29%29%2F%28%282n%2B9%29%29 = %28%28-3n%2B5%29%29%2F%28%282n%2B9%29%29