Answer:
0
Explanation:
First find the absolute value inside the large absolute value
| -11| = 11
|4-15| = |-11| = 11
| 11 - 11| = |0| = 0
| |-11| - |4 - 15| |
= |11 - |-11| |
= |11 - 11|
= |0| = 0
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