document.write( "Question 1123009: \n" ); document.write( "
Algebra.Com's Answer #740085 by t0hierry(194)\"\" \"About 
You can put this solution on YOUR website!
For the following system of linear equations, write the associated matrix equation (in the form Ax=b) and solve the matrix equation\r
\n" ); document.write( "\n" ); document.write( "2x1-3x2-7x3=-47
\n" ); document.write( "-4x1+6x2+8x3=64
\n" ); document.write( "add (2) times the first equation to the second equation:
\n" ); document.write( " 4x1-6x2-14x3=-94
\n" ); document.write( "-4x1+6x2+ 8x3 =64
\n" ); document.write( "-6x3 = -30
\n" ); document.write( "x3 = 5
\n" ); document.write( "2x1 - 3x2 = -47 + 35 = -12.\r
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