this is 6th grade math please help me!!

Answer:
0 and -18
Step-by-step explanation:
The absolute value (| |) of any number is a positive. Example: | -2 | = 2 and
| 2 | = 2.
But first you solve what's on the inside. If you have it as | 9+0 |, then you get | 9 | which equals 9. If you have -18, you have | 9+-18 | or | 9-18| and that gives you | 9 | which equals 9.
The absolute value is basically how far your number inside the | | is from 0. It will never be negative.
I hope this helped :)