Let $\vec{a}$ and $\vec{b}$ be two non-collinear vectors. For what values of $x$ and $y$ is the equation $2\vec{u} - \vec{v} = \vec{w}$ true,where $\vec{u} = x\vec{a} + 2y\vec{b}$,$\vec{v} = -2y\vec{a} + 3x\vec{b}$,and $\vec{w} = 4\vec{a} - 2\vec{b}$?

  • A
    $x = 4/7, y = 6/7$
  • B
    $x = 10/7, y = 4/7$
  • C
    $x = 8/7, y = 2/7$
  • D
    $x = 2, y = 3$

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