document.write( "Question 972219: My age is the difference between twice ny age four years from now and twice my age four years ago. How old am I? \n" ); document.write( "
Algebra.Com's Answer #594580 by ankor@dixie-net.com(22740)\"\" \"About 
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My age is the difference between twice ny age four years from now and twice my age four years ago.
\n" ); document.write( " How old am I?
\n" ); document.write( ":
\n" ); document.write( "let a = your present age
\n" ); document.write( "a = 2(a+4) - 2(a-4)
\n" ); document.write( "a = 2a + 8 - 2a + 8
\n" ); document.write( "a = 2a - 2a + 8 + 8
\n" ); document.write( "a = 16 yrs is your age
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