SOLUTION: If A and B are 2 matrices, and {{{matrix(1,3,A+B,""="",(matrix(2,1,-2,1)))}}} Find 3A+2B. (Show your work)

Question 1105435: If A and B are 2 matrices, and

Find 3A+2B. (Show your work)
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!

You did not tell us what matrices A and B repesent, just what 
the sum A+B was.  So there are many possibilities.  If fact 
there are an infinite number of possibilities.  Here's one 
possibility:



As you see their sum is as you stated:



So in this one case



But that's just one of trillions of possibilities.

Edwin

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