Question

I - 9 - 3 I subtract as indicated??

Answer 1

Yes, then multiply it by -1 if it is negative.

Answer 2

so - 27

Answer 3

\[|-9-3|=|-12|\]The | | bars just mean\[|x|=\max(x,-x)\]Simply, if x is negative, just turn it into a positive number and you're done.

Answer 4

okay thanks

Answer 5

You're welcome.