Answer
$\textbf{w} - 3\textbf{v} = \langle12, -10 \rangle$
Work Step by Step
$\textbf{w} - 3\textbf{v} = \langle0,8\rangle - 3\langle-4,6\rangle = \langle0,8 \rangle - \langle-12,18\rangle = \langle0+12, 8-18 \rangle = \langle12, -10 \rangle$
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