Properties of Vector Arithmetic
If v, w and u are vectors (each with the same number of components) and a and b are two numbers then we have then following properties.
v→ + w→ = w→ + v→ u→ + (v→ + w→) = (u→ + v→) + w→
v→ + 0→ = v→ 1v→ = v→
a (v→ + w→) = av→ + aw→ (a+b) v→ = av→ + bv→