Odpowiedzi

2010-03-04T18:57:50+01:00
Zad.2.
2(x-1)+x=x-3(2-3x)
2x - 2 + x = x - 6 + 9x
2x + x - x - 9x = -6 + 2
-7x = 4 |: (-7)
x = -4/7