document.write( "Question 1078142: Please help /w tough Precalculus question that involves row-echelon form.\r
\n" ); document.write( "\n" ); document.write( "Which of the following demonstrates the augmented matrix for the system of equations given below?\r
\n" ); document.write( "\n" ); document.write( "system of equations & solutions: https://s17.postimg.org/a4vvic9kf/row-e.png
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Algebra.Com's Answer #692666 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
It's not tough at all.
\n" ); document.write( "Look at the coefficient matrix.
\n" ); document.write( "\"A=%28matrix%283%2C3%2C%0D%0A1%2C2%2C-1%2C%0D%0A-1%2C1%2C-3%2C%0D%0A4%2C3%2C-2%29%29\"
\n" ); document.write( "Now just \"add\" the column matrix that contains the right hand side constants as a new column,
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\n" ); document.write( "\"%28matrix%283%2C3%2C%0D%0A1%2C2%2C-1%2C%0D%0A-1%2C1%2C-3%2C%0D%0A4%2C3%2C-2%29%29\"+\"%28matrix%283%2C1%2C-2%2C3%2C4%29%29\"=
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