Odpowiedzi

2009-05-17T19:50:20+02:00
3/x+1 + 1/y-3 =1 / * (x+1)(y-3)
3*(y-3) + x+1 = 1(x+1)(y-3)
3y - 9 + x + 1 = xy -3x + y -3
3y -xy -y = -3x -x -3 + 8
2y - xy = -4x +5
(2-x) y = -4x +5
y = -4x +5 / 2-x