Find a common denominator for the following fraction pairs
       
      
                
     
    
    
    
    
    2 answers:
            
              
              
                
                
For a) the common denominator is 12
 and for b) the common denominator is 40 
                                
             
                    
              
              
                
                
A) The least common denominator is 12.  Both 4 and 3 go into 12 evenly.
b) The least common denominator is 40.  Both 5 and 8 go into 40 evenly.
                                
             
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