I suck at algebra please look at the image and help me

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test