document.write( "Question 340986: Find two numbers who sum is 30 so that 5 times the larger number decreased by three times the smaller number is 54.\r
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Algebra.Com's Answer #244206 by jrfrunner(365)![]() ![]() You can put this solution on YOUR website! Find two numbers who sum is 30 so that 5 times the larger number decreased by three times the smaller number is 54 \n" ); document.write( "-- \n" ); document.write( "Let S=small number \n" ); document.write( "Let L=large number \n" ); document.write( "-- \n" ); document.write( "given \n" ); document.write( "S+L=30 \n" ); document.write( "5L-3S=54 \n" ); document.write( "--- \n" ); document.write( "S=30-L solve for one of the variables \n" ); document.write( "5L-3(30-L)=54 subtitute into the other equation \n" ); document.write( "-- \n" ); document.write( "5L-90+3L=54 \n" ); document.write( "8L-90=54 \n" ); document.write( "8L=144 \n" ); document.write( "L=144/8=18 \n" ); document.write( "== \n" ); document.write( " \n" ); document.write( "== \n" ); document.write( "validate \n" ); document.write( "5L-3S=54 \n" ); document.write( "5(18)-3(12)=90-36=54 check \n" ); document.write( " |