04-14-2010, 19:37
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Member
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Join Date: Jun 2009
Location: Törökszentmikós/B.P.-TTNY
Posts: 317
Activity: 0%
Longevity: 82%
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Quote:
Originally Posted by Alg
hint: 45 a kerület, és 22 valamelyik 3 oldal összesen?  |
Quote:
Originally Posted by Rynok
22=a+b+c=K-d
41=a+b+d=K-c
34=a+c+d=K-b
38=b+c+d=K-a
22+41+34+38=4K-(a+b+c+d)=4K-K=3K
135=3K
K=45
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