Answer: -10
Step-by-step explanation:
- The absolute value function |x| basically gives the non-negative values for x, where w be any real number.
The given expression : 
Since -13 is written in an absolute form , so |-13|=13
Then, the above expression becomes , 
Since 30 is already a positive number , so |30|=30
Then, the above expression becomes , 
Hence, the final answer will be -10 .