Question 412406
  <pre><font size = 3 color = "indigo"><b>
Hi
The sum of x and y numbers is 20. The difference of the two numbers is 16.
the system of linear equations representing the problem...
 x + y = 20
 x - y = 16
Solving by elimination method:
 2x = 36
  x = 18  and y = 2 (substituting x into the 1st Eq)