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m-liczba 5-ciokątów
6n- liczba boków 6-ciokatów
5m-liczba boków 5-ciokątów
(6n-5m):3=n
6n-5m=3n
m=32-n
6n-5(32-n)=3n
6n-160+5n=3n
8n=160
n=20
m=32-20=12