Răspuns :
notam cele 3 nr impare consecutive:
2k+1, 2k+3, 2k+5
suma lor inseamna 6k+9
6k+9= 51
6k= 42
k= 7
numerele sunt: 15, 17 si 19
notam cele 3 nr impare consecutive:
2k+1, 2k+3, 2k+5
suma lor inseamna 6k+9
6k+9= 51
6k= 42
k= 7
numerele sunt: 15, 17 si 19