Odpowiedzi

2009-05-08T12:54:38+02:00
2x+1-3x=2(3x+3)
2x+1-3x=6x+6
2x-3x-6x=6-1
-7x=5/(-7)
x=-5/7 (piec siodmych)
2009-05-08T18:01:21+02:00
2x + 1 - 3x = 2(3x+3)
2x + 1 - 3x = 6x + 6
-1x + 1 = 6x + 6 / -6x
-7x + 1 = 6 / -1
-7x = 5 / :(-7)
x = - 5/7