document.write( "Question 520907: how do you solve x-y=3
\n" ); document.write( " x+y=5 \n" ); document.write( "
Algebra.Com's Answer #346261 by deborabr(181)\"\" \"About 
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x-y=3
\n" ); document.write( "x+y=5
\n" ); document.write( "you will sum the equations to delet one letter
\n" ); document.write( "x-y=3
\n" ); document.write( "+
\n" ); document.write( "x+y=5
\n" ); document.write( "-----
\n" ); document.write( "2x+0y=8
\n" ); document.write( "2x=8
\n" ); document.write( "x=8/2
\n" ); document.write( "x=4
\n" ); document.write( "substitute to find y
\n" ); document.write( "x+y=5
\n" ); document.write( "4+y=5
\n" ); document.write( "y=5-4
\n" ); document.write( "y=1
\n" ); document.write( "or
\n" ); document.write( "x-y=3
\n" ); document.write( "4-y=3
\n" ); document.write( "4-3=4
\n" ); document.write( "1=y
\n" ); document.write( "Answer: x=4 and y=1 \n" ); document.write( "
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