1. Nov 8, 2011 #1

   aub

   

   i know this doesnt fit here right but i didnt know where else i could ask this
   
   1. The problem statement, all variables and given/known data
   
   
   
   
   how did they solve 1 through 4? it should be easy but i cant solve it
   
   thanks for any help

    

   aub, Nov 8, 2011
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3. Nov 8, 2011 #2

   phyzguy

   

   Science Advisor

   You want to manipulate the equations to eliminate variables. For example, what happens if you add equations (1) and (3) together? Try this and see if you can proceed further.

    

   phyzguy, Nov 8, 2011
4. Nov 11, 2011 #3

   aub

   

   ok thanks i solved it

    

   aub, Nov 11, 2011

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