Respostas

2014-07-28T18:26:30-03:00
10x= -9-1
10x=-10
x=-10/10
x= -1
3 2 3
2014-07-28T18:27:27-03:00
10x +1 = -4-5
10x +1 = -9
10x = -9 -1
10x = -10

x = -10
       10

x = -1
3 5 3