document.write( "Question 992799: Christopher is x years old. How old will he be in 13 years? How old was he 4 years ago? \n" ); document.write( "

Algebra.Com's Answer #612292 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Christopher is x years old. How old will he be in 13 years?    x + 13.\r\n" );
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document.write( "How old was he 4 years ago?                                    x - 4.\r\n" );
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