1+x=3 solve for x

I'm basically giving away brainliest to whoever has the best answer

X=2 because the only way to get 3 when you only have a 1 is to add two.

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.