16+10+5+3=34
15+?+?+?=34
14+?+?+?=34
13+?+?+?=34
12+?+?+?=34
11+?+?+?=34

Răspuns:
15+10+6+3 =34
14+10+6+4 =34
13+10+7+4 =34
12+10+10+2=34
11+15+6+2 =34