Teachers and parrents

Instructions:

Insert numbers into empty fields in triangle (grape). The sum of two neighbouring numbers in one row must be equal to number below those fields. You may use only "pranskters" - numbers, which are known and located below triangle (grape).

Example

6
39
87
8
  
9
  
14
  
17
  
30
  
31
  
56
  

Solution

30
9
8
6
39
17
14
56
31
87

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