Solve the system of equations using matrices. Use the Gaussian elimination method with back-substitution.

x+ 3y =z + 15

x= - 3+ y -z

x+y +7z = 13 The solution set is?

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https://drive.google.com/file/d/17duZxN1S8CwuOPebKeZBUIndcUoIJq-P/view?usp=sharing

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https://helpinhomework.org/blog/how-to-obtain-answer-through-google-drive-link