Question

what is another way to write 13 minutes before 10

Answer 1

im not sure if you want this answer, but:
9:47

Answer 2

13 minutes before 10 is 9:47 ( A.M or P.M)

I'm not exactly sure what your answer is but you can say

13 minutes to 10.
Or
47 minutes after 9.

These are two ways.