How do you evaluate #abs7#?

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Answer 1 · 2017-01-13T02:08:03

#|7| = 7#

We use the definition:

# |x| = { (-x, x lt 0), (0, x = 0), (x, x gt 0) :} #

Which gives #|7| = 7#

Answer 2 · 2017-01-14T13:02:42

#|+7|=+7#

Consider the following:

#|-7|=+7#

#|+7|=+7#

So whatever is inside the | | is considered to give only a positive value as an answer to that part.