Respuestas

2012-11-20T03:37:29+01:00

2/3-(1/3.2) 5/3-(3/9:3)

2/3-(1/6)(5/3)-3/3

2/3-5/18-1

(12-5-18)/18=-11/18

 

2012-11-20T03:41:03+01:00
 2/3-(2/3) 5/3-(1/9)=

 

 2/3-(2/3) 5/3-1/9=  2/3-10/9-1/9=

 

(6-10-1)/9=

 

-5/9