This question is not difficult. If we use this equation, we can solve it immediately: let me be a.

Then a-6=4+3.

a-6+6=4+3+6

a= 13

So this number is 13.

If you use your thinking, it is: I subtract 6, and I subtract 6 more than 4.

More than 4, 3 is 7.

That is to say: I subtract 6, which is 7.

Then if I don't subtract 6, I'll add it back. If I subtract 6, it is equal to 7. If I don't subtract 6, it's 13 (add 6 back).