Odpowiedzi

2009-11-30T17:21:40+01:00
( 2 a + b ) * c -(2ac - bc +1)=2ac =bc -1=-1

6(a2 +b +1:3)-6 (a2-0.5) -3(b+1:3)=6a2 +6b+6:18- 6a2 +3-3b-3:9=3b+3+0.3+0,3=3b+3.6