Start with the given equation.
 
 
 
   Combine like terms on the left side.
 
 
 
   Add   to both sides.
 
 
 
   Add   to both sides.
 
 
 
   Combine like terms on the left side.
 
 
 
   Combine like terms on the right side.
 
 
 
   Divide both sides by   to isolate  .
 
 
 
   Reduce.
 
 
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Answer:
  So the solution is    |