Question

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Answer 1

Answer:

If matrices are equal then their elements should be equal so,

r +4 = 5

r = 5-4 = 1

Step-by-step explanation:

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Answer 2

We know that ,

=> Two matrices are equal if they have the same dimension or order and the corresponding elements are identical.

=> So , We can use the equality of matrices to solve for variables.

=> Now , Equate the corresponding elements and solve for the variables .

=> r + 4 = 5

=> r = 1 is the answer