Respostas

2014-07-29T11:33:03-03:00
2x=5x+15
2x-5x=15
-3x=15
x=15/-3
x=-5
1 5 1
2014-07-29T11:33:13-03:00
2x = 5x + 15
2x - 5x = 15
-3x = 15
x = -5