<PRE><B>Question 454682</B>
How do I add this problem?

b           +      2b
____             _________
b-1               b^2-1

-----------
To add or subtract fractions you need to
have a common denominator on the fractions.
------------
least commondenominator is (b-1)(b+1) = b^2-1
------------
Rewrite each fraction with the lcd as its denominator:
[b(b+1)/lcd] + [2b/(lcd]
----
Combine the numerators over the lcd:
---
[b^2+b+2b]/lcd
---
Simplify:
---
= [b^2+3b]/[b^2-1]
==================
Cheers,
Stan H.</PRE>