Respostas

2013-08-23T21:26:31-03:00
A(-12, -9, -6, -3, 0, 3, 6, 9, 12, 15, 18)

2013-08-23T21:40:59-03:00
Conjunto: {-12, -9, -6, -3, 3, 6, 9, 12, 15, 18}