Respuestas

2012-04-11T04:15:02+02:00

13/8 - 12/4 =1/4

2/5%3/4= 8/15

9/5+7/2 x 1/3-7/10

(9/5+7/2) . (1/3-7/10)

   (16/7) . (10/21) =  26/28