Respostas

2014-05-21T19:49:23-03:00
A melhor resposta!
2014-05-21T19:51:09-03:00
A)5+7-3 = 9
b) 8+2+1=11
c)-6+3-2= -5
d)18+5+2+3=28
e)-30-6+1-7 = 42
2 3 2