Help, Please.

5x + 2y = 76

3x + 2y = 40    multiply this equation by -1 and add it to the first

5x + 2y = 76

-3x - 2y = -40

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2x  = 36      divide both sides by 2

x  = $18  = the cost of an adult ticket

Of course......we do have a problem here.......the cost of the other ticket is  (-$7)........!!!!!

x=8

y=8

CPhill: x=18 Does NOT work the way he/she has written the equations.

Well, Guest.....here's a graph of both equations.....as you can see, (18, -7)  is the solution point

https://www.desmos.com/calculator/d439snijlp

The other posted  solution of (8, 8)  cannot be correct...............it doesn't "work" in the first equation........!!!!

CPhill: I simply modified his/her 76 to 56!!!!!!!. He/she has obviously made a mistake.