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## Homework Statement

Show that W ={(x,y,z) : x +2y +3z =0} is a subspace of R

_{3}. By finding a subset S of W such that span(S) = W.

## Homework Equations

Ab = X?

## The Attempt at a Solution

I don't have an attempt because i'm completely lost where to start . Can someone point me in the right way please.

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