document.write( "Question 600129: the sum of two numbers is 50. Two times the smaller number exceeds the larger number by 31. Find the numbers. \n" ); document.write( "
Algebra.Com's Answer #379183 by godsgirls(5)![]() ![]() ![]() You can put this solution on YOUR website! The sum of two numbers is 50. Two times the smaller number exceeds the larger number by 31. Find the numbers.\r \n" ); document.write( "\n" ); document.write( "First we need to write out equations. Let x equal the first number and y equal the second. The sum of two numbers is 50: \n" ); document.write( "\n" ); document.write( "Two times the smaller number (we'll make that x) exceeds the larger number (y) by 31. \n" ); document.write( "\n" ); document.write( "Here I'm going to teach you a trick that will become handy once you get into high school math. \n" ); document.write( "It's called combining equations. \n" ); document.write( "First we need to multiply the first equation by 2. \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "of course, we know from our second equation that 2x = y + 31. So we substitute this into our first equation.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "Combine like terms to get: \n" ); document.write( "\n" ); document.write( "subtract 31 from each side: \n" ); document.write( "Simplify: \n" ); document.write( "divide both sides by three to isolate y. \n" ); document.write( "this becomes: \n" ); document.write( "\n" ); document.write( "Now we have y, we can use our first equation to find x. \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "substitute 23 for y: \n" ); document.write( "subtract 23 from each side. \n" ); document.write( "simplify: \n" ); document.write( "\n" ); document.write( "So your two numbers are 27 and 23. I hope this helps you!\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |