document.write( "Question 119196: solve the matrix equation
\n" ); document.write( "x+[218] =[6 -1 8]
\n" ); document.write( " [430] [-5 2 -7] \n" ); document.write( "

Algebra.Com's Answer #87287 by jim_thompson5910(35256) $\"\"$ $\"About$

You can put this solution on YOUR website!
Start with the given matrix equation\r
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "x+[2 1 8] =[6 -1 8]\r\n" );
document.write( "  [4 3 0]  [-5 2 -7]\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Subtract the matrix

[2 1 8]\r\n" );
document.write( "[4 3 0]

from both sides\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "x =[6 -1 8]-[2 1 8]\r\n" );
document.write( "   [-5 2 -7][4 3 0]\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Combine the matrices\r
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "x =[6-2 -1-1 8-8]\r\n" );
document.write( "   [-5-4 2-3 -7-0]\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Subtract\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "x =[4  -2  0]\r\n" );
document.write( "   [-9 -1 -7]\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "--------------------\r
\n" ); document.write( "\n" ); document.write( "Answer:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the matrix X is\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "x =[4  -2  0]\r\n" );
document.write( "   [-9 -1 -7]\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "

\n" ); document.write( "

\n" );