document.write( "Question 1008286: May I have help w/ this one?\r
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document.write( "3r +5s + t =0
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document.write( "3r –s –3t = 4
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document.write( "-3r-4s-4t= -19\r
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Algebra.Com's Answer #624027 by stanbon(75887)![]() ![]() ![]() 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 \n" ); document.write( "------ \n" ); document.write( "Subtract row 1 from row 2 \n" ); document.write( "Add row 1 to row 3 \n" ); document.write( "-------------- \n" ); document.write( "3r +5s + t =0 \n" ); document.write( "0 –6s –4t = 4 \n" ); document.write( "0 + s -3t = -19 \n" ); document.write( "------- \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 \n" ); document.write( "==== \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 \n" ); document.write( "-------------------------- \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 \n" ); document.write( "-------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "---------- \n" ); document.write( " |