Respuesta :

Answer:

x - a

Step-by-step explanation:

The mean is calculated as

mean= [tex]\frac{sum}{count}[/tex]

         = [tex]\frac{x-3a+x-2a+x-a+x+x+a}{5}[/tex]

         = [tex]\frac{5x-5a}{5}[/tex]

         = [tex]\frac{5(x-a)}{5}[/tex]

         = x - a

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