Respuestas

2013-04-20T22:21:01+02:00

ANDRES: 1/2

BERNARDO; 1/3.1/2

CESAR:1/4.(1-1/3.1/2)

 

1/2+1/3.1/2+1/4-1/4.1/3.1/2+D= 1

1/2+1/6+1/4-1/24+D= 1

7/8+D= 1

D= 1/8

listo