document.write( "Question 997175: Twice the difference of a number and 7 equals 9 \n" ); document.write( "
Algebra.Com's Answer #615436 by Theo(13342)![]() ![]() You can put this solution on YOUR website! x represents the number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2 * (x - 7) = 9\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "divide both sides by 2 to get x - 7 = 4.5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "add 7 to both sides to get x = 11.5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "to confirm, test our the original assmption.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "twice the difference of a number and 7 equals 9.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the number is 11.5 \n" ); document.write( "11.5 - 7 = 4.5 \n" ); document.write( "two times 4.5 = 9.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "looks good. \n" ); document.write( " \n" ); document.write( " |