Respostas

2013-11-19T11:02:03-02:00
10x=-15-5
10x=-20
x=20
    10
x= 2
1 5 1
2013-11-19T11:03:19-02:00
X + 9x + 5 = -15
10x = -20
x = -20/10
x = -2