Răspunsuri

2014-11-05T16:59:42+02:00
(7n+4,5n+3)=111.5n+3=1
11.5n=1-3
11.5n=-2
Cel mai inteligent răspuns!
2014-11-05T17:03:11+02:00
Pai faci asa: (7n+ 4,5n+3) =1.......Aduni 7n+4,5n=11,5n.........11,5n+3=1...Il treci pe 3 in partea cealalta 11,5n=1-3......11,5n= -2.....n= -2 : 11,5.....n= -0,17.....Asa vine facutt daca este 4,5 cu virgula
3 3 3