-1, 0, 1
It need not be. 2 and 3 are consecutive integers and their sum is 5, not 31.
Divide the sum of the three consecutive odd integers by 3: -3 /3 = -1. The smallest of these integers will be two less than -1 and the largest will be two more than -1, so the three consecutive odd integers will be -3, -1, and +1.
They are are 62, 63 and 64.
201
3 consecutive even integers whose sum is 396 are 130, 132 and 134.
The sum of even integers cannot end with 9. why not
73,74,75
4 and 5
-3,-4,-5
The integers are 24, 25 and 26.
24 + 25 + 26 = 75
The integers are 16, 17 and 18.