# The reduced row echelon form of the augmented matrix of a system of three linear equations in 3 variables must be of the form where a,b,c are real nmb

The reduced row echelon form of the augmented matrix of a system of three linear equations in three variables must be of the form $\left[\begin{array}{ccc}1& 0& 0\\ 0& 1& 0\\ 0& 0& 1\\ a& b& c\end{array}\right]$ where a, b, c, are real numbers. Justify your answer.

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Jozlyn
Reduced row echelon form consists of the first row starting off with a 1 followed by 0s