The sum of four and twice a number is the same as that number increased by nine

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

If you make it a little more clear i can answer it

sorey ik so sorey i need and need to answer a few

You want the answer to all