Răspunsuri

2014-11-19T16:43:19+02:00
A + ( a + 1 ) + ( a + 2 ) = 19 ori 3
3a + 3 = 57
3a = 57 - 3
3a = 54
a = 54 : 3
a = 18

Vf :  (18 + 19 + 20) : 3 = 57 : 3 = 19
1 5 1
2014-11-19T17:03:51+02:00