AMC 10B 2014 Problem 9

Past Contests AMC 10 2014 Part B
, , ,
1

For real numbers w and z,

\dfrac{\dfrac{1}{w}+\dfrac{1}{z}}{\dfrac{1}{w}-\dfrac{1}{z}}=2014

What is \dfrac{w+z}{w-z} ?

Answer Choices
A. -2014
B. \dfrac{-1}{2014}
C. \dfrac{1}{2014}
D. 1
E. 2014