document.write( "Question 1015421: Charles is x years old now.Express his age12 years ago. \n" ); document.write( "
Algebra.Com's Answer #631788 by ikleyn(52788)\"\" \"About 
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\n" ); document.write( "Charles is x years old now.Express his age 12 years ago.
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\n" ); document.write( "\n" ); document.write( "x-12, if x >=12 (13?).\r
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