Matrix: finding x in A.x=b



Hello!

Is there any way to find vector x in A.x=b simply?

I have:
(%i105) A:matrix([1,2],[3,4])$
(%i107) b:matrix([1],[2])$

(%i115) solve(A.x=b,[x1,x2]);
(%o115)                               []
^^^ Doesn't work:(

How can I get vector x?

There is function lsolve(A,b) in MathCAD. Is there the same in Maxima?
--
Mansur Marvanov <nanorobocop at gmail.com>