document.write( "Question 459557: Solve the linear system:
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document.write( "5x-y=7
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document.write( "x=-4y+16 \n" );
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Algebra.Com's Answer #315132 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 5x-y=7 \n" ); document.write( "x=-4y+16 \n" ); document.write( "--------- \n" ); document.write( "Sub for x in the 1st eqn \n" ); document.write( "5(-4y+16) - y = 7 \n" ); document.write( "-20y + 80 - y = 7 \n" ); document.write( "-21y = -73 \n" ); document.write( "y = 73/21 \n" ); document.write( "-------------- \n" ); document.write( "Sub for y in the 2nd eqn \n" ); document.write( " \n" ); document.write( " |