Odpowiedzi

2009-11-26T19:48:16+01:00
2009-11-26T21:59:26+01:00
(10a do n-2b do m+c)+(-3a do n - 6b do m-c)=
=10a do n - 3a do n -2b do m- 6b do m+c -c =
=7a do n - 8b do m