Answer:
6
Step-by-step explanation:
Absolute number (represented by | |) will always return a positive number.
Therefore,
|9 - 12| will return you a positive number when you remove the | | sign.
|-3 + 6} will also return you a positive number when you remove the | | sign.
|9 − 12| + |−3 + 6|
= |-3| + |-3|
= 3 + 3
= 6
