NEWBIE: How do I use the results of a Solve?

*To*: mathgroup at smc.vnet.net*Subject*: [mg95963] NEWBIE: How do I use the results of a Solve?*From*: Tim Heger <timheger at yahoo.com>*Date*: Sat, 31 Jan 2009 01:11:53 -0500 (EST)

I can't figure out how to use the results of Solve I just created as a new variable. Here's a simple example of what I am trying to do: Solve[some equation, x] Results in {x->12} I then want to use the x in y = x * 5 for example.... Obviously when I try to use this it fails because Mathematica sees the equation as y = {x->12} * 5 and not y = 12 *5 ... How do I change the results from the Solve from a rule to an actual value I can then use? Thanks, Tim

**Follow-Ups**:**Re: NEWBIE: How do I use the results of a Solve?***From:*"Jaccard Florian" <Florian.Jaccard@he-arc.ch>