Answer:
a = 24
Explanation:
a - 1.5 = 22.5
a = 24
you can plug it into the other 2 to make sure it is right my brain hurts so i won't.
Have a nice day! :) and btw people will think it is a scam because 2 answers are allowed right so the points split in half and the person answering will only get 10 points