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1. |-4|=1/4  

2. |-4|=4  

3. |-4|=-4   

4. |-4|=|4|  

5. |4|=4

 Mar 18, 2021
 #1
avatar+501 
+1

2, 4, and 5 are correct.

l-4l = 4 and l4l = 4

 Mar 18, 2021

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