One number exceeds another by 2 the sum of numbers is 44 what are the numbers

Question

I want to know how to get the answer on a ti 84 plus

Answer 1

x+y = 44

x-y = 2

add

2x =46

x = 46/2 = 23

y = 44-23 = 21

or

two numbers are

44/2 + and -2/2 =1 = 22+/-1 = 23 and 21