Consider the following two systems.
(a)
(b)
(i) Find the inverse of the (common) coefficient matrix of the two systems.

(ii) Find the solutions to the two systems by using the inverse, i.e. by evaluating
where represents the right hand side (i.e.
for system (a) and
for system (b)).
Solution to system (a): , =
Solution to system (b): , =