Write the following linear combinations as vector-matrix products.

A. v = 2(1,2,3) - 4 (-5,0,-1) + 3 (2,-2,3)

B. v = 3(2,-4) + 2 (1,4) - 1 (-2,-3) + 5 (1,1)

If anyone can help with a step by step how to do this or point me to a good step by step guide how to do this that would be very much appreciated.