Re: [obm-l] questasinha

To: obm-l@xxxxxxxxxxxxxx
Subject: Re: [obm-l] questasinha
From: ricardo.bioni@xxxxxxxxx
Date: Wed, 19 Apr 2006 20:02:18 -0300
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Se a idade do cachorro é c, então, pelo que o pai disse:
c + 5 = 2(c - 5) => c = 15