Question

find two number whose sum is 31 and different is 3

Answer 1

17+14=31
and 17-14= 3

Answer 2

Ans.

Let the numbers are a and b.
Then
a + b = 31 .....(i)
a - b = 3 .....(ii)

Solving from (i) and (ii), we get
a = 17 and b = 14.

So the numbers are 17 and 14.