Odpowiedzi

2010-04-12T15:33:37+02:00
3(3-X)+2X=8-2(X-1)
=9-3X+2X=8-2X-2
-3X+2X+2X=-9+8-
2010-04-12T15:33:55+02:00
9-3x+2x=8-2x+2=
-3x+2x+2x=8+2-9
x=1

4-5(3-x)=-x-(3-2x)=
4-15+5x=-x-3+2x=
5x+x-2x=15-4-3=
4x=8/:4
x=2