Respuestas

2014-03-01T08:10:26+01:00

3/4 + 1/2 = 10/8

2/3 + 5/6 = 27/18

10/11 + 7/12 = 197/132

9/6 + 7/8 = 114/48

20/10 + 40/30 = 1000/300