Do you mean:"What three consecutive numbers add up to 99?" If you do, then the numbers are 32, 33, 34.
99 and -99
4950
99
99
99
Oh, dude, you're really making me do math right now? Fine, fine. So, the three consecutive numbers that add up to 154 are 50, 51, and 52. They're like the three musketeers of math, always sticking together and causing trouble.
297
-99
93, 2, 1 are three numbers that add up to 96
97, 98, 99 and 100.
-99