MathGroup Archive 2006

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adding matrices

[This post has been delayed due to email problems - moderator]

am fairly new to mathematica. simply want to add two 3x3
matrices together(actually, subtract). if they are called
m and p, if i type m-p, mathematica treats the second matrix p as a scalar and subtracts that entire 3x3 matrix p from each entry of m. the help contents do not seem to address this issue!!! there must be a simple way of doing this??

thanks in advance for any help

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