document.write( "Question 905421: the sum of two numbers is 16. one number is 4 less than 3 times the other. find the numbers \n" ); document.write( "
Algebra.Com's Answer #549183 by harpazo(655)![]() ![]() You can put this solution on YOUR website! x + y = 16\r \n" ); document.write( "\n" ); document.write( "x = 3y - 4\r \n" ); document.write( "\n" ); document.write( "===========\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3y - 4 + y = 16\r \n" ); document.write( "\n" ); document.write( "4y - 4 = 16\r \n" ); document.write( "\n" ); document.write( "4y = 16 + 4\r \n" ); document.write( "\n" ); document.write( "4y = 20\r \n" ); document.write( "\n" ); document.write( "y = 20/4\r \n" ); document.write( "\n" ); document.write( "y = 5.\r \n" ); document.write( "\n" ); document.write( "We now know that y = 5.\r \n" ); document.write( "\n" ); document.write( "Let us plug y = 5 into either original equation to find x.\r \n" ); document.write( "\n" ); document.write( "I will use x + y = 16.\r \n" ); document.write( "\n" ); document.write( "x + 5 = 16\r \n" ); document.write( "\n" ); document.write( "x = 16 - 5\r \n" ); document.write( "\n" ); document.write( "x = 11\r \n" ); document.write( "\n" ); document.write( "The two numbers are 5 and 11. \n" ); document.write( " |