Respostas

2014-09-02T14:50:51-03:00
2/5x = 1/3(x+8)
2/5x = 1/3x + 8/3
2/5x - 1/3x = 8/3
6/15x - 5/15x = 8/3
1/15x = 8/3
120 = 3x
x = 120/3
x = 40 anos
1 5 1