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Solving log equations, how?

• To: mathgroup at smc.vnet.net
• Subject: [mg13627] Solving log equations, how?
• From: Voyager_2 at cable.A2000.nl (Jeffrey A. Soesbergen)
• Date: Fri, 7 Aug 1998 03:08:28 -0400
• Organization: A2000 Kabeltelevisie & Telecommunicatie
• Sender: owner-wri-mathgroup at wolfram.com

How can I solve the following exponential equations:

1. log3 x=-2

2. log x + log (x+3) = 1

Can anyone tell me how to solve these in Mathematica?