Respuestas

2012-11-23T01:29:33+01:00

2/9:4/9 = 2/9 x 9/4 = 2/4

2/4 + 1/4 = 3/4

3/4 - 14/5 =-41/20 c:

2012-11-23T04:46:31+01:00

                       2/9.9/4=1/2

                       1/2+1/4=3/4

                        3/4-14/5=-41/20

 

                            Respuesta:-41/20