Homework Help: Formula help

Posted by David on Sunday, October 12, 2008 at 12:52pm.

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?

Formula help - bobpursley, Sunday, October 12, 2008 at 12:57pm
ok, solve.

f(a)=f(a+15)
1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7)

multiply both sides of the equation by

(a+7)(a-8)(a+22)
and solve.
- Formula help - David, Sunday, October 12, 2008 at 1:15pm
  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
Formula help - bobpursley, Sunday, October 12, 2008 at 2:08pm
Nor do I.

Related Questions

Math - Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15). How do I ...
Math problem still stuck - Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a...
Algebra - To solve the system of equations, which expression could be ...
Algebra - Solve. x-3/15=1/3 I get 8 as an answer. Is this correct? If you ...
algebra - if x.y=30 and x+y=10.3, what is x? i been told by my teacher to use ...
Algebra - Dividing Radicals I used this for the redial sign \/ Problem: 30 \/15 ...
Finding the Molecular Formula - A certain compound containing only carbon and ...
math - please help me to perform the indicated operation.15-20/(3)(5)-15 You ...
algebra - use substitution to solve the linear system 3x-y=15 x+2y=-2 Solve for ...
stat - a how to solve the problem when on 100 point examination with mean 60, SD...

For Further Reading

First Name:
School Subject:
Answer: