Find all integers x for which there exists an integer y such that

Question

1/x + 1/y = 1/7.

I'm not exactly sure how to approach this problem. Please answer as soon as possible.

Answer 1

this might be a good place to start.
google is your friend.

https://web2.0calc.com/questions/find-all-integers-x-for-which-there-exists-an-integer-y-such-that-1-x-1-y-1-7-in-other-words-find-all-ordered-pairs-of-integers-x-y-that