PLEASE I NEEE THIS IT DOESN’T MAKE SENSE!! If xy = x/y = x-y, where x, y ≠ 0, then determine the numerical value of x+y??

Do you mind if you guys me with this question i’m on number 8

Tyler reads 2/5 of a book on monday, 1/3 of it on tuesday, 2/9 of it on wednesday, and 3/4 of the remainder on thursday. if he still has 14 pages left to read on friday, how many pages are there in the book?

Einstein office equipment has a rental plan for office machines. a fax machine that lists for $722.98 can be rented for 22% of the price annually. the state imposes a usage charge of 3.2%. if stephen hawking travel decides to rent the fax machine, what will its total monthly rental charge be?