Answer:
15, 17, 19
Explanation:
if the first odd number is x, then
the 2nd odd number is x + 2
the 3rd odd number is (x + 2) + 2
so x + (x + 2) + (x + 2 + 2) = 51
x + x + 2 + x + 2 + 2 = 51
3x + 6 = 51
3x = 51 - 6
3x = 45
x = 15
so the numbers are 15, 17, 19