Respostas

2013-09-03T17:14:29-03:00
8 + 4x = 6x - 4
4x - 6x = -4 - 8
-2x = -12
2x = 12
x = \frac{12}{2}
\boxed{x = 6}
3 5 3
8 + 4x = 6x - 4
4x - 6x = -4 - 8
-2x = -12
2x = 12
x = 6
o meu deu o msm de cima
2013-09-03T17:19:56-03:00
 8+4x=6x-4

4x - 6x = - 4 - 8
- 2x = - 12
x = - 12/ - 2
x = 6
_________
prova
8 + 4 . 6 = 6 . 6 - 4
   8 + 24 = 36 - 4
         32 =   32
1 5 1