Respuestas

2013-01-18T03:11:45+01:00

5/7+2/3 = (15+14) /21  = 29/21

 

4/15+2/3=   (4+10)/15 = 14/15

2013-01-18T03:23:20+01:00

5/7+2/3 = (15+14) /21  = 29/21

 

4/15+2/3=