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If A=[{:(1,2,3),(2,3,1):}]andB=[{:(3,-1,...

If `A=[{:(1,2,3),(2,3,1):}]andB=[{:(3,-1,3),(-1,0,2):}]`, then find `2A-B`.

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The correct Answer is:
`[{:(-1,5,3),(5,6,0):}]`
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