Question

19. Find the matrix x for which [ matrix 1&-4\\ 3&-2 matrix ]x=[ matrix -16&-6\\ 7&2 matrix ]

Answer 1

Answer:

−y42x−26]+[31−202−1]=[6502x+y05]

⇒  [x−y+34+12−2x+0−2+26−1]=[6502x+y05]

⇒  [x−y+350x05]=[6502x+y05]

⇒  x−y+3=6

⇒  x−y=6−3

⇒  x−y=3           ---- ( 1 )