Answer:
They are equivalent, and the number 12 was used to reduce them.
Step-by-step explanation:
36/60 is equivalent to 3/5, because if you divide 36 and 60 by 12, you will be left with 3/5
36/12
= 3
60/12
= 5
So, 36/60 = 3/5, and the number 12 was used to reduce them