If and then compute .

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Solution

The given matrices are,

A=[ 2 3 1 5 3 1 3 2 3 4 3 7 3 2 2 3 ]

B=[ 2 5 3 5 1 1 5 2 5 4 5 7 5 6 5 2 5 ]

Substitute the values of Aand B in expression 3A−5B.

3A−5B=3[ 2 3 1 5 3 1 3 2 3 4 3 7 3 2 2 3 ]−5[ 2 5 3 5 1 1 5 2 5 4 5 7 5 6 5 2 5 ] =[ 2 3 5 1 2 4 7 6 2 ]−[ 2 3 5 1 2 4 7 6 2 ] =[ 0 0 0 0 0 0 0 0 0 ]

Thus, the values of 3A−5B are [ 0 0 0 0 0 0 0 0 0 ].

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