Don't hurt yourself, take a rest

34-16
- - - - -
4- 8

34 - 14
24 - 10
16 - 7
8 - 5
4 - 4

I concur with Relative.

You're actually both slightly off... The numbers follow the pattern, except the last number (top number) on the left is 4 smaller than it should be. Naturally this means the the right side is 10 also.

And btw, this is from "Don't hurt yourself, take a rest" logic task from hackquest.de

34 - 10
4 - 4

-------
1 - 3
2 - 3
3 - 5
4 - 4
5 - 4
6 - 3
7 - 5
8 - 5
9 - 4
10 - 3
.
.
.