Odpowiedzi

2010-02-17T16:13:14+01:00

x + 2 + 4 = 6 + x
x - x = 6 - 6
-x = 0 / * -1
x = 0


1 4 1
2010-02-17T16:13:28+01:00
2010-02-17T16:31:00+01:00