Hello,
|190-210|+|19-21|+x=100
==>|-20|+|-2|+x=100
==>20+2+x=100
==>x=100-22
==>x=78
Thus there is a mistake in your question !
I think its 90 . I'm not 100% sure though.
Answer:

Step-by-step explanation:
We want to simplify:

We expand to get:

We expand further to get:

Answer:
28,993
Step-by-step explanation:
Subtract 8,500 from 37,493
The answer is 28,993
Hope this helped :)