Respostas

2014-07-16T18:07:07-03:00
X + 31 = 100
x = 100 - 31
x = 69
1 5 1
A melhor resposta!
2014-07-16T18:08:12-03:00
X+31=100
x= 100-31
X= 69

69+31= 100
1 5 1