What do you mean? just the number 80?
-- Subtract 9 from each side of the equation.
-- Divide each side by 4 .
-- The value of 'n' is right there, and you did it all on your own !
Answer:
4 bags of cat food because food for pets are expensive
YOur greeatest common factor is 216. If you prime factor them it comes out to 216. Good luck.
