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USPshnik [31]
3 years ago
10

What the answer to number 7

Mathematics
1 answer:
Sveta_85 [38]3 years ago
6 0

Answer:

Step-by-step explanation:

Focus on #7.  Let's combine the first two matrices inside round parentheses.

We get  

  -2 - 1

   4 + 3

and so the original problems becomes

     -3         4

3( [     ] + [      ] )

      7          2

Combining the two matrices, we get the following:

     1            3

3([      ]) = [      ]

     9            9

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