Answer:
9
Explanation:
- Rule => if ''a'' is negative, |a| = -a
- |0| = 0
- absolute value means how far a number from 0
- if we don't know anything about x,and x equals to a. We can say |x| = a and |-x| = a....
- So , x or -x equals a . But both of x aren't equals a, one of them is same
|a| + |b + c| = |-4| + |2 + (-7)|
|-4| = -(-4) = +4
|2 + (-7)| = |-5|
|-5| = -(-5) = +5
4 + 5 = 9
Hope this helps ^-^