Respostas

2014-05-13T19:52:23-03:00
3(2x+3)-4.(x-1) = 3

6x+9-4x+4=3

2x= -9-4+3

2x= -10

x= -5 
1 5 1
2014-05-13T20:26:09-03:00
3 . (2x + 3) - 4 . (x - 1) = 3
6x + 9 - 4x + 4 = 3
6x - 4x = 3 - 9 - 4
2x = - 10
x = - 10 : 2
x = - 5