Use the definition of absolute value.

The absolute value is always non-negative. So if
is already non-negative,
is unchanged. But if
is negative, then
because multiplying
by -1 makes it positive.
Now, if
, then by the definition of absolute value,

Answer:
The Aztecs achieved creating the canoe, the Aztec calendar, and really good medicine
Step-by-step explanation:
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It’s d times it three times length width height
7 pens and 20 pencils because 28 divided by 4 = 7 and 80 divided by 4 = 20