Answer:
Bob has 15 books and Joey has 2x books. If you subrtact Joeys books from bobs how many will there be. there will be 9. becase if you take 15 and cancle it out then you do that to the other side then there is -6. and -2x= -6 then would equal 3.
Step-by-step explanation:
15 - 2x = 9
-15. -15
-2x= -6
/-2. /-2
x=3
