Rational numbers?

Question

find a number between any two rationals a/b and c/d,
where, a, b, c, and d are integers where b, and d do NOT equal 0

ok i really barely understnad any of these answeres. can someone show me in a simplier form?

Answer 1

The simplest way to do this is to average the
2 rationals
We get ½(a/b + c/d) = ½(ad + bc)/bd.
Example: Find a rational number between
1/2 + 3/4.
1/2 + 3/4 = 5/4
1/2*5/4 = 5/8.
5/8 is between 1/2 and 3/4.

Answer 2

(a/b +c/d)/2, i.e., the average