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suma adoua nr consecutive este 19. Afla nr .metida figurativa ms f

Răspuns :

a |-----|
b |-----|+1|      } 19.

19 - 1 = 18   ( 2 segmente egale)
18 : 2 = 9 (a)
9 +1 = 10 (b)
Verificare : 9 +10 = 19.
a  /-----------/
b /-----------/-1-/
19-1=18
18:2=9
a=9
b=9+1
b=10
9+10=19