Question: Addition of Matrices

I am able to get the matrices entered and they are assigned line numbers in the worksheet.  I am trying to add two matrices and having no luck.  I have tried (1)+(2)  [those are the line numbers assigned by Maple] but I am only getting an answer of 3 for the line numbered (3).

I hope I am making sense.   Perhaps as I think it through, I am not entering the matrices correctly?  I am using the matrix maker on the left side.  If anyone has any help I would really appreciate it.

Thanks!

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