posted by David on .
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?
1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7)
multiply both sides of the equation by
This is a multiple choice question and I am not getting any of the choices
Nor do I.