Respostas

2014-05-07T00:45:15-03:00
5x+7=6x-5
5x -6x = -7 -5
-x = -12 (-1)
x=12
2014-05-07T00:47:40-03:00
5x + 7 = 6x- 5
5x - 6x = -7-5
-x = -12 (-1)
x= 12