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First you go to the 3 dots neer the x you pres it thin you go to downloads and it shod be ther i hop i help if so make me the branliy
Answer:
Proved
Explanation:
Given


Required
Find out why they represent the same
To do this, we simplify either
or 
In this question, I will simplify

Apply de morgan's law

Apply distribution property

To simplify, we apply the following rules:
--- Inverse law
--- Inverse law
So, the expression becomes


Rewrite as:

From the given parameters:

This implies that:
when simplified is X or 
A sub folder is one layer under the folder - hence the prefix sub