We know that Nadie owes:
• $8 for a movie ticket.
,• $3 for popcorn.
,• $2 for a soda.
To know the total amount of money Nadie owes, we just need to sum. Remember that negative numbers represent debts.
[tex]-8-3-2[/tex]When numbers have the same sign, we sum and keep the same sign as a result.
[tex]-8-3-2=-13[/tex]