Sovling 4 equations with 4 uknowns for equilibrium

  • Thread starter aub
  • Start date
  • #1
aub
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i know this doesnt fit here right but i didnt know where else i could ask this

Homework Statement



153nosi.jpg



how did they solve 1 through 4? it should be easy but i cant solve it :frown:

thanks for any help
 

Answers and Replies

  • #2
phyzguy
Science Advisor
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1,675
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.
 
  • #3
aub
21
0
ok thanks i solved it
 

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