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52:4=13
13=100%
1=x
x=100%:13
x=7,7%
b)
uznajac ze figurami sa jopek krol, dama i as
13-4=9
9=100%
1=x
x=100%:9=11%
jeszcze moze chodzic w zadaniu ze asa tylko uznajemy za figure
13-1=12
12=100%
1=x
x=100%:12=8,3%