Respuestas

2013-07-20T18:34:40+02:00
-7/3 + (-1/2) = -7/3 - 1/2 

= -14 - 3/6 = -17/6
2013-07-20T18:37:52+02:00
-7/3 -1/2 = - (14/6 + 3/6) = -17/6