document.write( "Question 998551: -8z=4x
\n" ); document.write( "3x+z=2y
\n" ); document.write( "y-z=2x-1 solve the matrices
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Algebra.Com's Answer #616342 by Alan3354(69443)\"\" \"About 
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-8z=4x --> x = -2z
\n" ); document.write( "3x+z=2y
\n" ); document.write( "y-z=2x-1
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\n" ); document.write( "3x+z=2y
\n" ); document.write( "Sub for x
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\n" ); document.write( "3(-2z) + z = 2y
\n" ); document.write( "y = -5z/2
\n" ); document.write( "----------
\n" ); document.write( "y-z=2x-1
\n" ); document.write( "Sub for x and y
\n" ); document.write( "-5z/2 - z = 2(2z) - 1
\n" ); document.write( "-7z/2 = 4z - 1
\n" ); document.write( "-15z/2 = -1
\n" ); document.write( "z = 2/15 *************
\n" ); document.write( "y = -1/3 *************
\n" ); document.write( "x = -4/15
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