Question

b-9b???
how are you supposed to simplify if there isnt a nmber before the b????
Ms. Sue
Yes. You just need to combine like terms.

addison
do u do 1b-9b? i think that's how im supposed to do it
Ms. Sue
You need to combine them. What is 1b - 9b?

addison
-8b
Ms. Sue
Right! :-)