Do number 6. This is not a quiz this is for my students are you gonna help them?

Answer:
nope I think your students should be smarter then they can teach me how to do whatever that is and I can help someone else someday
Answer:
=c
Step-by-step explanation:
b−a−b−b+a+b+c
=b+−a+−b+−b+a+b+c
Combine Like Terms:
=b+−a+−b+−b+a+b+c
=(−a+a)+(b+−b+−b+b)+(c)
=c