The answer is B.
90-73=13
And what makes it one side replicates to the other side.
This making it 13.
D what is joeys and martinas current ages
Make a 4x4 table where rows are Alice, Bart, Pamela, and Robert, and where columns are the professions: Dentist, Laywer, Teacher and Writer.
Start crossing out possible pairing person-profession using the facts given. When a job is clearly assigned, you can cross it off for the rest of the people, for example, Pamela is a dentist so none of the rest are a dentist (because we are told they have all different jobs).
Eventually your table becomes filled.
Alice is a Lawyer
Bart is a Writer <<< so this is choice (B) for your answer
Pamela is a Dentist
Robert is a Teacher
Let me know if you have questions
If they all have the same variable it will be much easier to solve cause they’re all like terms. so you just take 10-5 which is 5 plus 3 which is 8 and 8 minus 8 is 0.