i have to write an equation involving an inverse matrix and solve for a, b and c.
so far i've got to
(9 -3 1) (a) (28)
(16 4 1) (b) = (-7)
(49 7 1) (c) (38)
if anyone could help me i would appreciate it a lot as I am really stuck
When you multiply on the left of each side by this inverse matrix, the LHS becomes , and the RHS will give (when you complete the multiplication) the solutions you want.
Can you complete it now?