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What must be the matrix X if 2X + [(1,2)...

What must be the matrix X if `2X + [(1,2),(3,4)] = [(3,8),(7,2)] ? `

A

`[(1,3),(2,-1)]`

B

`[(1,-3),(2,-1)]`

C

`[(2,6),(4,-2)]`

D

`[(2,-6),(4,-2)]`

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