Question 100845
/3x-9/<12


Part 1
 3x-9<12              
+   9 9               
___________            
  3x<21                
  3  3    
___________                  
   x<7                    


Part 2
 3x-9>12
+   9 9 
_________
  3x>-3
  3   3
_________
   x>-1


Answers:  
    (-1,7)
    -1<x<7
    x<7 and x>-1