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2014-05-05T23:04:52+03:00
[2*(x+2)*5+3*(x+2)]=273/7=39
2*(x+2)*5+3*(x+2)=39
Dai factor comun paranteza (x+2) si vei avea:
(x+2)(2*5+3)=39
Calcul simplu in paranteza a doua
(x+2) * 13 =39
x+2 = 3
x=1