Răspunsuri

2014-04-28T16:12:17+03:00
2014-04-28T16:15:18+03:00
2(x-1)+3x=-x+1
2x-2+3x=-x+1
5x-2=-x+1
-2-1=-x-5x
-3=-6x
-6x=-3|:(-6)
x=1/2