Escribe la solución correcta de las siguientes sumas y restas.

1. 3/4 + 5/4 + 2/4 =

   
   
   Comprobar

2. 4/9 + 5/9 + 7/9 =

   
   
   Comprobar

3. 43/52 - 28/52 =

   
   
   Comprobar

4. 64/8 - 41/8 =

   
   
   Comprobar

5. 13/43 + 42/43 =

   
   
   Comprobar

6. 6/25 +13/25 + 19/25=

   
   
   Comprobar

7. 98/103 + 44/103 + 31/103 =

   
   
   Comprobar

8. 35/64 + 28/64 =

   
   
   Comprobar

9. 39/21 + 27/21 + 40/21 =

   
   
   Comprobar

10. 7/4 + 15/4 + 45/4 =

    
    
    Comprobar

11. 108/47 - 37/47 =

    
    
    Comprobar

12. 76/13 - 27/13 =

    
    
    Comprobar

13. 108/47 - 37/47 =

    
    
    Comprobar

14. 53/35 - 16/35 =

    
    
    Comprobar

15. 140/24 + 34/24 - 12/24 =

    
    
    Comprobar

16. 52/9 + 17/9 - 8/9 =

    
    
    Comprobar