Thank you for the opportunity to help you with your question!
There is only one set of 3 consecutive numbers that will work for this because we end up with a linear equation that can only have one solution. You solved for x correctly. X will be the smallest of the 3 consecutive integers. Now, you will need to add 1, and 2 to x. So your answers will be x + 1, and x+2, which are -42 and -41 respectively.
Please let me know if you need any clarification. I'm always happy to answer your questions.