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document.write( "The sum of two numbers is 80. The larger number is 7 less than 3 times the smaller number. Find the smaller number. \n" );
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Algebra.Com's Answer #436947 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! X+Y=80 \n" ); document.write( "X=3Y-7 \n" ); document.write( "(3Y-7)+Y=80 \n" ); document.write( "4Y=80+7 \n" ); document.write( "4Y=87 \n" ); document.write( "Y=87/4 \n" ); document.write( "Y=21.75 ANS FOR THE SMALLER NUMBER. \n" ); document.write( "X+21.75=80 \n" ); document.write( "X=80-21.75 \n" ); document.write( "X=58.75 ANS. FOR THE LARGER NUMBER. \n" ); document.write( "PROOF: \n" ); document.write( "3*21.75-7+21.75=80 \n" ); document.write( "65.25+21.75=80 \n" ); document.write( "80=80 \n" ); document.write( " |