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Solution:
The numerical
value when direction or sign is not consider is called the
absolute value.
The
absolute value of x is written
|x|.
The absolute
value of a number is always positive, except
when the number is 0 (
|0|
= 0 )
If x =
|-2 |
then x = 2
If
y =
- | 3 | then ( | 3 | = 3 ),
y = - (3), y = - 3
If
z = - | - 4 | then ( | - 4 | = 4 ), z = - ( 4
),
z = -
4
z
+ y - x = - 4 - 3 - 2
z
+ y - x = - 4 - 5
z
+ y - x = - 9
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