Odpowiedzi

2010-03-10T18:56:02+01:00
(3x+5)+(7x-2y+6)+(-x+y-1)= 3x+5+7x-2y+6-x+y-1= 9x-y+10
1 4 1
2010-03-10T18:58:04+01:00
(3x+5)+(7x-2y+6)+(-x+y-1) = 3x+5+7x-2y+6-x+y-1 = 9x-y+10
2010-03-10T19:46:18+01:00
3x + 5 + 7x - 2y + 6 - x + y - 1 = 9x + y+10.