a + (a + 1) + (a + 2) = 9
∴ 3a + 3 = 9
∴ 3a = 6
∴ a = 2
So the numbers you want are 2, 2+1, and 2 + 2, in other words 2, 3, and 4.
8, 9, 10
8, 9 and 10.
-2 + -3 + -4 = -9
-10, -9, and -8
5*9= 45
1 + 3 + 5 = 9
They are 9, 10 and 11.
-11, -10, -9
They are 9, 11 and 13.
7 + 8 + 9 = 24
The numbers are -13, -11, and -9.
-5, -3, and -1