(adsbygoogle = window.adsbygoogle || []).push({}); "The Set of all elements X" ? What does this mean?

I know it's really simple but I don't understand what it means. In set builder notation when I'm describing a particular set I know for example: {10,11,12,13,14,15} is {x |x is a whole number greater than 9 less than 16} and is read "the set of all elements x such that x is a whole number greater than 9 less than 16"

"EDITED"

What is this statement saying; I don't get it.

Is it just describing a set named x?

Like is "the set of all elements x" just saying that the elements of x are limited to a whole number greater than 9 less than 15.

So set builder notation is just giving a set a variable name and then describing the set?

Am I missing something or is it really that simple.

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# The Set of all elements X ? What does this mean?

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