Odpowiedzi

2009-04-20T21:13:22+02:00
3/b=5/(b+12)
3*(b+12)=5b
3b+36=5b
2b=36
b=18
2009-04-20T21:14:50+02:00
3/b = 5/(b+12)
3b+36=5b
2b=36
b=18 =)