Answer:1/2 - 1/3 = 1/6
Step-by-step explanation:
 
        
                    
             
        
        
        
<span>how do you identify the indicated elements for example 
a32
A= 
3 12 6
1 0 9
8 7 4
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a32 means the element in the 3rd row and 2nd column
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a32 = 7</span>
        
                    
             
        
        
        
To determine the amount of fencing needed to enclose the pool area, you will need to add 15 feet to both sides of both dimensions to find the new dimensions that will need enclosed.
28 feet + 15 feet + 15 feet =  58 feet
23 feet + 15 feet + 15 feet = 53 feet
The fence will need to be 2 x 58 + 2 x 53 or 222 feet long for the 53 feet by 58 feet area.