document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=65845>Question 65845</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/093979862x/algebrahomeworkh>An Incremental Development</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Solve\r<BR>\n" );
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document.write( "x + y + z = 5\r<BR>\n" );
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document.write( "x - 2y + z = 8\r<BR>\n" );
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document.write( "3x - y - z = 3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #46628 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=46628\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve <BR>\n" );
document.write( "(1)   x + y + z = 5 <BR>\n" );
document.write( "(2)   x - 2y + z = 8 <BR>\n" );
document.write( "(3)   3x - y - z = 3\r<BR>\n" );
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document.write( "Lets add eq (1) & (3) and we get:\r<BR>\n" );
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document.write( "4x=8<BR>\n" );
document.write( "x=2\r<BR>\n" );
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document.write( "Substitute x=2 in Eq (1) & (2) and we have:\r<BR>\n" );
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document.write( "(1)   2 + y + z = 5 <BR>\n" );
document.write( "(2)   2 - 2y + z = 8 \r<BR>\n" );
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document.write( "subtract (2) from (1) getting:\r<BR>\n" );
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document.write( "3y=-3<BR>\n" );
document.write( "y=-1\r<BR>\n" );
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document.write( "Substitute x=2 and y=-1 in (1) and we have:\r<BR>\n" );
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document.write( "(1)   2 + (-1) + z = 5 <BR>\n" );
document.write( "1+z=5  subtract 1 from both sides:<BR>\n" );
document.write( "z=4\r<BR>\n" );
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document.write( "Ck by substituting x=2, y=-1 and z=4 in the original eqs.\r<BR>\n" );
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document.write( "Hope this helps---ptaylor\r<BR>\n" );
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document.write( " </SPAN>\n" );
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