Answer:
(y - x)/(y + x)
Step-by-step explanation:
(1/x - 1/y)/(1/x + 1/y) =
= (1/x - 1/y)/(1/x + 1/y) × (xy)/(xy)
= (y - x)/(y + x)
Answer:
I believe it is right by looking at this picture, but I am not certain
Answer: im sorry im not sure but you can find the answer if you look it up
Step-by-step explanation: