Use these matrices to do the arithmetic problems 1a-d. If a particular operation is impossible, explain why?
a.

b.

c.

d.

e. [D] [C]
f. [A] [D]

L42] LAl+[B] [3]=1 6 3 4 [c]=15 2 4.[D] -3 1 21 [D]=1 2 3-2 [C] LD]