Odpowiedzi

2009-11-22T16:30:53+01:00
3x-6 + 3x-9 = 8
6x -(-6 +(-9))= 8
6x -15 = 8
6x= 15+8
6x =23
1x=3.8(3)
2009-11-22T16:32:58+01:00
3x-6+3x-9=8
6x=8+9+6
6x=23/6
x=3 5/6
2009-11-22T16:40:06+01:00
(3x-6)+(3x-9)= 8
6x- 15= 8
6x= 8+15
6x=23/6
x=3,8(3)