Odpowiedzi

2010-04-13T20:52:42+02:00
5+2u=9-3u
2u+3u=9-5
5u=4 /:5
u = 4/5
2 3 2
2010-04-13T20:54:09+02:00
5+2u=9-3u
2u+3u=9-5
5u=4 /:5
u=⅘
3 2 3