document.write( "Question 62368: The sum of a number, and the difference between 16 and a number, plus 5 is 21. What is the number \n" ); document.write( "
Algebra.Com's Answer #43103 by checkley71(8403)\"\" \"About 
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X+(X-16)+5=21
\n" ); document.write( "X+X-16+5=21
\n" ); document.write( "2X=21+16-5
\n" ); document.write( "2X=32
\n" ); document.write( "X=32/2
\n" ); document.write( "X=16 SOLUTION
\n" ); document.write( "PROOF
\n" ); document.write( "16+(16-16)+5=21
\n" ); document.write( "16=5=21
\n" ); document.write( "21=21
\n" ); document.write( "
\n" );