document.write( "Question 213997: The sum of two numbers is 84. The first is 9 more than 4 times the second. Find the first number. \n" ); document.write( "
Algebra.Com's Answer #161645 by drj(1380)![]() ![]() You can put this solution on YOUR website! The sum of two numbers is 84. The first is 9 more than 4 times the second. Find the first number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Step 1. Let x be the second number. Let 9+4x is be first number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Step 2. x+9+4x=84 The sum of two numbers is 84.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Step 3. Simplify: 5x+9=84.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Step 4. Subtract 9 to both sides of equation: 5x+9-9=84-9=75\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Step 5. Simplify and divide by 5: 5x=75 or x=15. Then 9+4x=9+4(15)=69\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Step 6. The first number is 69.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "I hope the above steps were helpful. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "And good luck in your studies!\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Respectfully, \n" ); document.write( "Dr J \n" ); document.write( " \n" ); document.write( " |