I believe the answer is 2xyz because all the variables are the same. all you would have to do for an equation like this is type in your calculator 17+11-21-5
The only way you couldn't add all of them together is if the variables we're different.
5 people - pay 135 each 15 people - pay x each ---------------------------------- 5 : 15 = x : 135 15 x = 5 * 135 15 x = 675 x = 675 : 15 x = 45 Answer: B ) 45.00
