document.write( "Question 1008286: May I have help w/ this one?\r
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\n" ); document.write( "3r +5s + t =0
\n" ); document.write( "3r –s –3t = 4
\n" ); document.write( "-3r-4s-4t= -19\r
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Algebra.Com's Answer #624027 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
3r +5s + t =0
\n" ); document.write( "3r –s –3t = 4
\n" ); document.write( "-3r-4s-4t= -19
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\n" ); document.write( "Subtract row 1 from row 2
\n" ); document.write( "Add row 1 to row 3
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\n" ); document.write( "3r +5s + t =0
\n" ); document.write( "0 –6s –4t = 4
\n" ); document.write( "0 + s -3t = -19
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\n" ); document.write( "Interchange rows 2 and 3 to get::
\n" ); document.write( "3r +5s + t = 0
\n" ); document.write( "0 + s -3t = -19
\n" ); document.write( "0 –6s –4t = 4
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\n" ); document.write( "Add 6 times row 2 to row 3 to get:
\n" ); document.write( "3r +5s + t = 0
\n" ); document.write( "0 + s -3t = -19
\n" ); document.write( "0 + 0 -22t = -110
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\n" ); document.write( "Solve row 3 to get: t = 5
\n" ); document.write( "Solve row 2 to get: s = 3*5-19 = -4
\n" ); document.write( "Solve row 1 to get: r = (-5*-4 -5)/3 = 5
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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