Bases for a subspace and its orthogonal complement

Let $V \subset R^{5}$ be the subspace defined by the equation

x_{1} - 2 x_{2} + 3 x_{3} - 4 x_{4} + 5 x_{5} = 0.

Find (with justification) a basis for $V$ .
Find (with justification) a basis for $V^{⊥}$ , the subspace of $R^{5}$ orthogonal to $V$ under the usual dot product.

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L A T E X

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Let $V\subset {\bf R}^5$ be the subspace defined by the equation
\[
	x_1-2x_2+3x_3-4x_4+5x_5=0.
\]
\begin{enumerate}[label=\alph*)]
	\item Find (with justification) a basis for $V$.
	\item Find (with justification) a basis for $V^{\perp}$, the subspace of ${\bf R}^5$ orthogonal to $V$ under the usual dot product.
\end{enumerate}