Respostas

2014-09-02T21:47:43-03:00
2x-2=3x+4
2x-3x=4+2
-x=6 (-1)
x=-6
2014-09-02T22:07:55-03:00
2 ( x - 1 ) = 3x + 4

2x - 2 - 3x = 4

- x = 4 + 2

- x = 6 . ( - 1 )

x = - 6