Answer :

1 can be the only thing. 2,3,4,5,6,7,8,9 don't go in 45 and 32

32/2= 16

45/2= gives a decimal

45/9= 5

32/9= gives us a decimal.

only 1 can go into both

so answer is 1

Answer:

the anwser is 1

Step-by-step explanation: