-1328
There is an infinite number of solutions to this question !
19 Ashwin 1347.
Subtract a negative 1. 19 - (-1) = 20
If you subtract 19 from 25, you get a result of 6. This is calculated by adding 6 to 19.
13
369 +1347 = 1716
1, 3, 449, 1347.
1347
15
19 does.
2747
1347 + 5691 = 7038