Answer:
12/12 is equivalent to 20/20.
Step-by-step explanation:
Anything over itself is equal to 1, since you're dividing the number by itself. When you say and, I assume you mean equal, and since 12/12 is equal to 1, something/20 must equal 1. The only number that divides by 20 to get 1 is 20. Therefore, the blank is 20/20.
