document.write( "Question 234152: the larger of two numbers is 5 less than twice the smaller number. the sum of the two numbers is 28. what are the numbers? \n" ); document.write( "
Algebra.Com's Answer #172694 by nyc_function(2741)![]() ![]() You can put this solution on YOUR website! We have two equations in two variables in this case.\r \n" ); document.write( "\n" ); document.write( "Let y = larger number\r \n" ); document.write( "\n" ); document.write( "Let x = smaller number\r \n" ); document.write( "\n" ); document.write( "The larger of two numbers is 5 less than twice the smaller number. This can be written as y = 2x - 5.\r \n" ); document.write( "\n" ); document.write( "The sum of the two numbers is 28. This can be written as x + y = 28\r \n" ); document.write( "\n" ); document.write( "Here are the two equations:\r \n" ); document.write( "\n" ); document.write( "y = 2x - 5...equation A \n" ); document.write( "x + y = 28...equation B\r \n" ); document.write( "\n" ); document.write( "I will replace y in equation B with its value given in equation A to find x.\r \n" ); document.write( "\n" ); document.write( "x + (2x - 5) = 28\r \n" ); document.write( "\n" ); document.write( "3x - 5 = 28\r \n" ); document.write( "\n" ); document.write( "3x = 28 + 5\r \n" ); document.write( "\n" ); document.write( "3x = 33\r \n" ); document.write( "\n" ); document.write( "x = 33/3\r \n" ); document.write( "\n" ); document.write( "x = 11\r \n" ); document.write( "\n" ); document.write( "The smaller number is 11.\r \n" ); document.write( "\n" ); document.write( "To find y, let x = 11 in either equation A or B (your choice) and solve for y.\r \n" ); document.write( "\n" ); document.write( "I will use x + y = 28 to find y.\r \n" ); document.write( "\n" ); document.write( "Let x = 11\r \n" ); document.write( "\n" ); document.write( "11 + y = 28\r \n" ); document.write( "\n" ); document.write( "y = 28 -11\r \n" ); document.write( "\n" ); document.write( "y = 17\r \n" ); document.write( "\n" ); document.write( "The larger nuber is 17.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |