document.write( "Question 281583: John is three years older than Sue who is twice the age of David. write an expression for john's age in terms of D , David's age . \n" ); document.write( "
Algebra.Com's Answer #204555 by JBarnum(2146)\"\" \"About 
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J=john
\n" ); document.write( "S=sue
\n" ); document.write( "D=David
\n" ); document.write( "\"J=3%2BS\"
\n" ); document.write( "\"S=2D\"
\n" ); document.write( "substitue \"S\" for \"2D\"
\n" ); document.write( "\"J=3%2B2D\"
\n" ); document.write( "
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