Respostas

2013-11-04T15:09:14-02:00
X + 3x = 48
4x = 48
x = 48/4
x = 12

12 + 12(3) = 48
12 + 36 = 48
1 5 1
2013-11-04T15:12:16-02:00
X + 3x = 48
4x = 48
X = 48/4
X = 12

1 4 1