Well, here is the key to vector addition: Every vector can be broken into two vectors. The same can be done with scalars, its just not usually very useful. For example, I can break up 3 as 1+2.

Ideally, I should stick with the same notation I used in Basics: Vectors and Vector Addition. But let me go over the different ways you could represent a vector. Graphical Maybe this is too \[…\] ...