Answer:
first number: 673
second number: 674
third number: 675
Explanation:
so, you add
x + x + 1 + x + 2 = 3x + 3.
3x + 3 = 2019
subtract 3 from both sides, to cancel out the opposite. you then get 2019. so then you divide 2019 by 3 to then get 673.