document.write( "Question 566470: 2x+y=5
\n" ); document.write( "2x+y=1 substatution
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Algebra.Com's Answer #366215 by mananth(16946)\"\" \"About 
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2 x + 1 y = 5 .............1
\n" ); document.write( "1 y = 1 -2 x ---------2
\n" ); document.write( "/ 1 =
\n" ); document.write( " y = 1 -2 x
\n" ); document.write( "Substitute y in (1)
\n" ); document.write( "2 x + 1 ( 1 -2 x ) =
\n" ); document.write( "2 x + 1 + -2 x = 5
\n" ); document.write( "2 x -2 x = 5 -1
\n" ); document.write( "0 x = 4
\n" ); document.write( "/ 0
\n" ); document.write( "x= undefined\r
\n" ); document.write( "\n" ); document.write( "So the system has no solution. The lines are parallel
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