Respostas

2014-08-03T18:55:42-03:00
2/3 de 80 é igual a 80 / 3 x 2
80 / 3 = 26,66...
26,66 x 2 = 52
2014-08-03T19:15:34-03:00
2/3 de 80 = (2/3).80 = 2.80/3 = 160/3 = 53,333...