Question

#1  The difference between the two numbers is 3.

#2 The sum of the two numbers is 13.  



What are the two numbers? 

Let x = _____________

Let y =______________

Answer 1

Let x and y be the two numbers, with x − y = 3 and x + y = 13.

Add the equations: 2x = 16 ⇒ x = 8.
Then y = 13 − x = 5.

Let x = 8
Let y = 5