Wednesday
August 20, 2014

Homework Help: Math

Posted by David on Sunday, October 12, 2008 at 1:34pm.

Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15).

How do I solve this problem?

I understand this so far
f(a)=f(a+15)
1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7)

I am lost after that


This is a multiple choice question and I am not getting any of the choices

a.) -161/8
b.) 120/7
c.) 161/7
d.) -17

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