document.write( "Question 629439: what number is three more than twice the other number if the sum of the two numbers is 21 \n" ); document.write( "
Algebra.Com's Answer #396266 by algebrahouse.com(1659)![]() ![]() You can put this solution on YOUR website! \"what number is three more than twice the other number if the sum of the two numbers is 21\"\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = one number \n" ); document.write( "2x + 3 = other number {one number is three more than twice the other}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + 2x + 3 = 21 {their sum is 21} \n" ); document.write( "3x + 3 = 21 {combined like terms} \n" ); document.write( "3x = 18 {subtracted 3 from each side} \n" ); document.write( "x = 6 {divided each side by 3}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x + 3 {other number} \n" ); document.write( "= 2(6) + 3 {substituted 6, in for x, into 2x + 3} \n" ); document.write( "= 12 + 3 {multiplied} \n" ); document.write( "= 15 {added}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "one number is 6 \n" ); document.write( "other number is 15 \n" ); document.write( " For more help from me, visit: www.algebrahouse.com \n" ); document.write( " |