Respostas

2014-04-25T14:27:05-03:00
2X - 4 = - X + 5
2X +X = 5+4
3X = 9/3
X= 3
2014-04-25T14:27:47-03:00
2x - 4 = -x+5

2x + x= 5 +4

3x= 9

x= 9/3
x=3