Odpowiedzi

2010-03-11T18:23:18+01:00
2010-03-11T18:24:02+01:00
- 2/3y - (2-3y) < 5y+2(1-y)
-2/3y -2+3y<5y+2-y
-3 2/3y -5y+y< 2+2
-7 2/3 < 4
2010-03-11T18:24:08+01:00
- 2/3y - (2-3y) < 5y+2(1-y) /*3y
-2-6y+9y²<15y²+6y-6y²
-12y<2
y>-1/6