Răspunsuri

Cel mai inteligent răspuns!
2014-09-06T18:31:44+03:00
(1/2-1)(x+3)-x(2*1/2+1)=-9
-1/2(x+3)-2x=-9
-x/2-3/2-2x=-9
-x-4x/2=-9+3/2
-5x/2=-18+3/2
-5x=-15
X=3
1 5 1