Find the matrices A and B,if `2A-B=[[6,-6,0],[-4,2,1]]`and `A-2B=[[3,2,8],[-2,1,-7]]`

Answer

`A = [{:(3, - (14)/(3) , - (8)/(3) ),(-2,1,3):}], B = [{:(0 , - (10)/(3) , - (16)/(3)),(0,0,5):}]`