Hey there! Hello!
For your problem, I believe they're asking you to figure out what number minus 11 will equal –10. If this is the case, here's how you solve problems like these.
You can simply add eleven to your given number, in this case –10, to get your answer:
[tex]-10+11=1[/tex]
If you want to check, you can always flip it around to see if it checks out:
[tex]1-11=-10[/tex]
Hope this helped you out! Feel free to ask me any additional questions if you have any. :-)
