Note que 7 divide 14a + 14b.Como 7 divide (14a + 14b) - (13a + 11b) = a + 3b,então 7 divide 13a + 11b.
From: [email protected] To: [email protected] Subject: [obm-l] Divisibilidade Date: Sat, 5 May 2012 02:33:07 -0300 Mostre que se 7 | a + 3b ent˜ao | 13a + 11b
