document.write( "Question 591130: 2x + y = 8 y= x - 7 \n" ); document.write( "
Algebra.Com's Answer #375501 by mananth(16946)\"\" \"About 
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2 x + 1 y = 8 .............1
\n" ); document.write( "-1 x + 1 y = -7 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -1
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-2 x -1 y = -8
\n" ); document.write( "-1 x + 1 y = -7
\n" ); document.write( "Add the two equations
\n" ); document.write( "-3 x = -15
\n" ); document.write( "/ -3
\n" ); document.write( "x = 5
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "2 x + 1 y = 8
\n" ); document.write( "10 + 1 y = 8
\n" ); document.write( " 1 y = 8 -10
\n" ); document.write( " 1 y = -2
\n" ); document.write( " y = -2 \r
\n" ); document.write( "\n" ); document.write( "(-3,-2)
\n" ); document.write( " \n" ); document.write( "
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