Question

when are two rational numbers a/b and c/d equal

Answer 1

https://www.mytutor.co.uk/answers/1746/A-Level/Maths/Prove-that-between-every-two-rational-numbers-a-b-and-c-d-there-is-a-rational-number-where-a-b-c-d-are-integers
Prove that between every two rational numbers a/b and c/d, there ...