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# in math, what does an equal sight with a slash threw it mean? i.e.?

-1/x X 1/y, (sign thingy) 0, y (sign thingy) 0

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dee... is an *** hole

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- 1 decade agoFavorite Answer
it means "does not equal".

For your statement it means:

"the negative of one over x times one over y is not equal to zero, such that y does not equal zero.

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