Odpowiedzi

2010-04-07T21:24:45+02:00
2(x+1)=x
2x + 2 = x
2x - x = (-2)
x = (-2)
2 3 2
2010-04-07T21:25:03+02:00
2(x+1)=x
2x+2=x
2x-x=-2
x=-2
2 5 2
2010-04-07T21:38:41+02:00
2(x+1)=x
2x+2=x
2=x-2x
2=x
x=2
1 1 1