a + ( a + 2 ) + c = 86
2 × a + 3 × c = 152 l ( - )
2 × a + c = 86 - 2 = 84
___________________
/ 2 c = 152 - 84 = 68
68 : 2 = 34 ( c ) → al treilea numar
2 a + 34 = 84
2 a = 84 - 34
2 a = 50
a = 50 : 2
a = 25 → primul numar
b = a + 2
b = 25 + 2 = 27 → al doilea numar impar consecutiv
Verific: 25 + 27 + 34 = 86 → suma celor trei numere
