ReplaceAll and rules from a list v7.0

*To*: mathgroup at smc.vnet.net*Subject*: [mg104227] ReplaceAll and rules from a list v7.0*From*: kristoph <kristophs.post at web.de>*Date*: Sat, 24 Oct 2009 02:40:20 -0400 (EDT)

Hi, Suppose I have the equation x=a+b and the list l={{1,1},{2,2},{3,3}} How can I quickly assign the list to the above equation, that is, I would like to get the following result {2,4,6} The first element of each sub-list should be assigned to a and the second to b. Thanks in advance. Kristoph

**Follow-Ups**:**Re: ReplaceAll and rules from a list v7.0***From:*Matthias Greiff <greiff@mac.com>

**RE: ReplaceAll and rules from a list v7.0***From:*Richard Hofler <rhofler@bus.ucf.edu>

**Re: ReplaceAll and rules from a list v7.0***From:*Leonid Shifrin <lshifr@gmail.com>

**Re: ReplaceAll and rules from a list v7.0***From:*Adriano Pascoletti <adriano.pascoletti@dimi.uniud.it>