document.write( "Question 864934: The sum of two numbers is 80 and their differences is 20.find the numbers. \n" ); document.write( "

Algebra.Com's Answer #521418 by rfer(16322) $\"\"$ $\"About$

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x+y=80
\n" ); document.write( "x-y=20
\n" ); document.write( "x=y+20
\n" ); document.write( "------------
\n" ); document.write( "y+20+y=80
\n" ); document.write( "2y=80-20
\n" ); document.write( "y=60/2
\n" ); document.write( "y=30
\n" ); document.write( "-------------
\n" ); document.write( "x+30=80
\n" ); document.write( "x=50
\n" ); document.write( "--------------
\n" ); document.write( "x-y=20
\n" ); document.write( "50-30=20 \n" ); document.write( "

\n" );