document.write( "Question 827946: hi im in algebra honors and i thought i needed immediate help on solving linear systems my substitution.. for example i need help on 4.5x + 1.5y = 24
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document.write( "x-y=4 help me please? \r
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document.write( "thank you. \n" );
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Algebra.Com's Answer #498946 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 4.5x + 1.5y = 24 \n" ); document.write( "x - y = 4 \n" ); document.write( "------- \n" ); document.write( "Eliminate fractions, multiply the 1st eqn by 2 \n" ); document.write( "9x + 3y = 48 \n" ); document.write( "--- \n" ); document.write( "x - y = 4 --> x = y + 4 \n" ); document.write( "Sub for x in the 1st eqn \n" ); document.write( "9(y+4) + 3y = 48 \n" ); document.write( "9y + 36 + 3y = 48 \n" ); document.write( "12y = 12 \n" ); document.write( "y = 1 \n" ); document.write( "----------- \n" ); document.write( "x = y+4 \n" ); document.write( "x = 5 \n" ); document.write( " \n" ); document.write( " |