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

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

B

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

C

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

D

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

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The correct Answer is:

C

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