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What is the difference between $x = a, b, c$ and $x \in \{a, b, c\}$? Which expression should I use?

Junee
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  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Nov 15 '23 at 16:06
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    The first one is not well written in the mathematics idiom, but will be understood to mean to most people versed in the idiom; the second one which is well written and could be understood by even a computer. I'd read $x = a, b, c$ as "$x$ is equal to either $a,b$ or $c$". – MasB Nov 15 '23 at 16:10

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