Substracting vector, like addition vector, is basic and easy equation to do. Since you just need to subtract each axis from both vector.
This can be expanded to:
By subtracting a vector with vector, the result you get is vector direction from vec2 to vec1. See image:
So if you do this equation:
In vector c, you can get vector direction form vector B to the vector A.
And if you want to do subtraction on a 2-dimensional vector, you can do with the same equation. Except with less axis. See bellow:
And one last thing. Just like usual subtraction, you can’t switch between A and B.
So be careful when doing a vector subtraction.
And that it for now. If you have any further question or suggestion, you can write them on the comment section bellow.