Odpowiedzi

2010-03-08T21:41:30+01:00
2010-03-08T21:43:06+01:00
1/2(4z+2)= 1/2*4z+1/2*2=2z+1
- 1/3 (6b - 3 ) =-2b+1
0,2(x - 5y) =0,2x-1
3(1/3a + 1) = a+3