Odpowiedzi

2010-03-03T17:02:13+01:00
0,5(2x-6y+4)-4(0,5x+2,5y-2)=
x-3y+2-2x-10y+8=
-x-13y+10
2010-03-03T17:02:52+01:00
= x- 3y+2 - 2x- 10y +8= -3x - 13y + 10
2010-03-03T17:03:34+01:00
0,5(2x-6y+4)-4(0,5x+2,5y-2)= x-3y+2-2x-10y+8=10-x-13y