document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=102300>Question 102300</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0131808656/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> This is a System with 3 variables. On this problem you have to solve the system elimination. Please help if you can.\r<BR>\n" );
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document.write( "x+y+2z=3<BR>\n" );
document.write( "2x+y+3z=7<BR>\n" );
document.write( "-x-2y+z+10  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #74526 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=74526\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I'm assuming that the +10 in the third equation is =10\r<BR>\n" );
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document.write( "A) add the first and third equations to eliminate x ... -y+3z=13\r<BR>\n" );
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document.write( "B) add the second and 2 times third to eliminate x ... -3y+5z=27\r<BR>\n" );
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document.write( "add -3 times A) to B) to eliminate y ... -4z=-12 ... z=3\r<BR>\n" );
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document.write( "-y+3(3)=13 ... -y+9=13 ... y=-4\r<BR>\n" );
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document.write( "x+(-4)+2(3)=3 ... x+2=3 ... x=1 </SPAN>\n" );
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