You can find these worked-out solutions at retailers like Amazon and MightyApe.com.au . Four Algebra Books by Lang
Refer to Shakarchi’s Linear Algebra manual, as the content overlaps almost perfectly with the first half of the Undergraduate Algebra book. lang undergraduate algebra solutions upd
is highly recommended by the math community to fill in conceptual gaps and provides supplementary content that clarifies Lang's concise style. Solutions Manual for Lang's Linear Algebra - Amazon.com You can find these worked-out solutions at retailers