  =  

[IMG]
vers4/1.png
, ,     (3 .) +  (2 .) = 

[IMG]
vers4/2.png
, ,     (3 .) +  (2 .) = 

[IMG]
vers4/3.png
, ,     +  (2 .) = 

[IMG]
vers4/4.png
, ,     (2 .) +  = 

[IMG]
vers4/5.png
  (2 .) +  (2 .) =  

[IMG]
vers4/6.png
  (2 .) = 

[IMG]
vers4/7.png
 (3 .) +  (3 .) = 

[IMG]
vers4/8.png
 +  +  =  (4 .)

[IMG]
vers4/9.png
 (8 .) = 