Just combine like terms. So 9x would go with -7x and 4y will go with 2y. so 9x-7x equals 2x, and then 4y+2y equals 6y.So your final expression will be 2x+6y
        
                    
             
        
        
        
Were you discouraged by the obstacle you faced?
        
             
        
        
        
Answer:
fear and anxiety
Explanation:
hi! it seems like these people are looking for somewhere as well as seem a little lost. it is also nighttime which makes most people afraid because they are afraid of the unknown. i definitly would not say happy because nothing in their tone gives that indication and i would not say angry because they seem pretty civil with each other. that leaves fear and anxiety which i think seem like two emotions anyone would feel in their situation! 
comment or message me if you have any questions!