The integers are -19, -18 and -17.
The numbers are 52, 53 and 54.
17+18+19
The first integer is 17.
53+54 = 107. Far too easy.
The integers are -19, -18 and -17.
16+18+20= 54
The numbers are 52, 53 and 54.
17+18+19
52 + 54
The first integer is 17.
53+54 = 107. Far too easy.
57
The middle number must be one third of 54 ie 18 so the other numbers are 17 and 19.
53 54 55
52, 53 and 54.
16 18 20