Given
There are a pair of numbers that satisfy both constraints
1) the sum is 12
2) the difference is 5
So, let the numbers are (x) and (y)
From the first constraint ⇒ x + y = 12
From the second constraint ⇒ x - y = 5
So, we can draw the following lines
As shown the point of intersection between the lines = (8.5, 3.5)
So, the answer will be the numbers pair = 3.5 and 8.5
