Solve for x in the equation x + 10 = 15.
       
      
                
     
    
    
    
    
    2 answers:
            
              
              
                
                
X+10=15
Isolate x by subtracting 10 from both sides
x+10-10=15-10
x=5
Final answer: B
Check by plugging the value in
5+10=15
True
                                
             
                    
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Let 2x=student tickets
Let x=adult tickets
2x+x=408
3x=408
x=136
2x=272
Number of student tickets sold:272
Number of adult tickets sold:136