document.write( "Question 300032: The sum of two numbers is 30 and their difference is 10. What are the two numbers? \n" ); document.write( "
Algebra.Com's Answer #215405 by checkley77(12844)\"\" \"About 
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X+Y=30
\n" ); document.write( "X-Y=10 ADD
\n" ); document.write( "---------------
\n" ); document.write( "2X=40
\n" ); document.write( "X=40/2
\n" ); document.write( "X=20 ANS.
\n" ); document.write( "20+Y=30
\n" ); document.write( "Y=30-20
\n" ); document.write( "Y=10 ANS.
\n" ); document.write( "PROOF:
\n" ); document.write( "20-10=10
\n" ); document.write( "10=10
\n" ); document.write( "
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