3/6 and 7/14 can both be reduced to 1/2
Lets start with 3/6
3 divided by 3 1
-- ----
6 divided by 3 2
now, 7/14
7 divided by 7 1
-- ----
14 divided by 7 2
Whatever you do to the numerator (top number) you have to do to the denominator (bottom number)