The suma of a 3 digit number and a 1 digit number is 217 the producto of the number is 642 of one number is betlemita 200 and 225 what are the number

The first number is between 200 and 225.
The second number is between 0 and 9.
Let's use the isolation process by taking away the numbers we know don't work.
Since the highest number is 9, any number that needs you to add more than 9 to get 217, is wrong.
we have limited it to 206-225.
But, you can't have the number be greater than 217 so we can limit the range again.
Now the numbers are between 206-217.
Now what we have to do is take the 1st number, and multiply it by the 2nd number to get 642. Whichever combo makes 642 is the answer.

The first number is 214. The second number is 3.

Answer is negative 2