what numbers have a sum of 18 and a difference of 2????

Question

I really really need your help

Answer 1

Let x and y be the two numbers.

x + y = 18

x - y = 2

Add the two equations and get

2x = 20 ⇒ x = 10

Plug x = 10 into either equation, solve for y, and get

y = 8

Test the solution.