Respuestas

2013-06-03T01:40:59+02:00
1/2 + 1/3 = 5/6
1/3 - 1/2 = -1/6
1/2 + 1/3 + 1/4 = 13/12
1/2 - 1/3 + 1/4 = 5/12
1/2 + 1/3 - 1/4 = 7/12
1/3 + 1/3 + 1/3 =2/3