document.write( "Question 894505: seven year ago,jackson's age was 2/5 of the age he will be 20 years from now.how old is jackson now?
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Algebra.Com's Answer #542141 by harpazo(655)![]() ![]() You can put this solution on YOUR website! Jackson's age now is x.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Jackson's age 7 years ago is x - 7.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Jackson's age 20 years from now is x + 20.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x - 7 = (2/5)(x + 20)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5 (x - 7) = 5 times (2/5)(x + 20)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5x - 35 = 2x + 40\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5x - 2x = 40 + 35\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3x = 75\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 75/3\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 25\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Jackson is now 25 years old.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |