Answer:
x = -3 ; y = -1
Explanation:
Let 9x - 6y = -21 be eqn.1 & let 6x - 12y = -6 be eqn.2 .
Lets find the value of x from eqn.1
Now , lets put the value of x (which we got from eqn.1) in eqn.2 :-
(Putting x here)
Now , lets find the value of x.
Putting y = -0.5 gives ,