Answer:
11
Explanation:
The absolute value sign || converts a number or an expression to a positive value. For example,
[tex]|-7|=7[/tex]the negative sign is removed.
Likewise,
[tex]|-4|=4_{}[/tex]Therefore, the sum
[tex]|-7|+|-4|[/tex]becomes
[tex]7+4[/tex]which evaluates to
[tex]7+4=11[/tex]which is our answer!
