6a2b2 +3ab2-a2b2-4ab2

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i

the answer is simply just 6n add the two together as they have an n

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled