Normally I am not one to make long answers
but if you want an explanation in case you have the same question with different numers, here is an explanation
Plug in the eequation and solve for x
Doing quick math the equation would be 8y-33 = 5y+9
I plugged this into m a t h w a y and got y=14
Then I subsituted y with 14
5 x 14 = 70 70 + 9 =79
Then I did a double check by making sure they were both equal
8 x 14 = 112 112 - 33 = 79
79 = 79
Therefore your answer is 79
Hope this helped, have a great day :)