How do you simplify $[(-5,7),(6,8)]-[(4,0,-2),(9,0,1)]$ ?

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Answer 1 · 2016-12-02T09:05:32

These matrices cannot be subtract since they are of different orders. The first is a $" "2xx2,$ and the second a $" "2xx3$

How do you simplify [(-5,7),(6,8)]-[(4,0,-2),(9,0,1)][(-5,7),(6,8)]-[(4,0,-2),(9,0,1)]?