Given three vectors `a=6hati-3hatj,b=2hati-6hatj and c=-2hati+21hatj` such that `alpha=a+b+c`. Then,

Given three vectors `a=6hati-3hatj,b=2hati-6hatj and c=-2hati+21hatj` such that `alpha=a+b+c`. Then, the resolution of the vector `alpha` into components with respect to a and b is given by