.
You are given
-
= 336, (1)
which is equivalent to
= 336, or
2xy = 336, or xy =
= 168,
where x and y are integer numbers.
So, any pair of integers with xy = 168 is the solution to equation (1).
x y
1 168
2 84
3 56
4 42
6 28
8 21
12 14
and all reverted pairs, and all the pairs with opposite numbers.
Of them, only the pair (12,14) represents consecutive positive even integers.