document.write( "Question 101730This question is from textbook Algebra 1
\n" );
document.write( ": The sum of three numbers is 123. The second number is 9 less than two times the first number. The third number is 6 more than three times the first number. Find the three numbers. \n" );
document.write( "
Algebra.Com's Answer #73980 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The sum of three numbers is 123. The second number is 9 less than two times the first number. The third number is 6 more than three times the first number. Find the three numbers. \n" ); document.write( "-------------------------------------- \n" ); document.write( "Let the numbers be a,b,c \n" ); document.write( "EQUATION: \n" ); document.write( "a+b+c=123 \n" ); document.write( "b = 2a-9 \n" ); document.write( "c = 3a+6 \n" ); document.write( "------------------------ \n" ); document.write( "Rearrange the equations: \n" ); document.write( "a +b+c = 123 \n" ); document.write( "2a-b+0 = 9 \n" ); document.write( "3a+0-c = -6 \n" ); document.write( "------------ \n" ); document.write( "solve this system of three equations any way you know how. \n" ); document.write( "------------ \n" ); document.write( "I get a=21, b=33, c=69 \n" ); document.write( "============================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |