Respostas

A melhor resposta!
2014-03-11T16:52:50-03:00
A12=5+(12-1)*2
A12=5+11*2
A12=5+22
A12=27
1 5 1
2014-03-11T16:53:01-03:00
An= a1+(n-1).r
an= 5+11.2
an=27