# How to solve h,k in terms of A,B,C,D,E with standard linear algebra method?

How to solve h,k in terms of A,B,C,D,E with standard linear algebra method? $$2Ah + Bk = -D$$ $$Bh + 2Ck = -E$$

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Are all of $A,B,C,D,E$ square matrices of the same size? What are $h$ and $k$? Scalars, vectors or square matrices? – user1551 Dec 6 '12 at 23:24