Answer:4/7
Step-by-step explanation: cross-canceling helps
12/7×1/3
4/7×1/1=4/7
 
        
             
        
        
        
Answer:
  b
Step-by-step explanation:
 
        
                    
             
        
        
        
Practically anything above -8 
Such as -7, 2, 15600, anything not under -7.9
        
             
        
        
        
Let this guide you through
 
        
        
        
Answer:
there are 11 diffrent sums and the greatest sum is 12
Step-by-step explanation: