Answer:A point U
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
2 5/7
Step-by-step explanation:
First we need to make the 4 2/7 top heavy so it is easier to subtract :)
4 2/7 = 3 9/7
Now we can subtract :)
3 9/7 - 1 4/7 = 2 5/7
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Answer:
Identity element property 
Step-by-step explanation:
The property that justifies the step 3 is the identity element property.
Mathematically, the identity element is that number such that performing an arithmetic operation such as addition or multiplication with the number gives back the number we started with 
For addition, the identity element is 0
while for multiplication, the identity element is 1
 
        
             
        
        
        
Find a common denominator between the two (this case it would be 18) and bring the fractions up, so 10/9 would be 20/18, and 3/2 would be 27/18. Then, multiply across, and simplify to lowest terms.