document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=223366>Question 223366</A>: <I><SPAN STYLE=\"word-break: break-all;\"> HELP!! I just need help with those two... Can you please help me?!?!?<BR>\n" );
document.write( "Solve each system by elimination.<BR>\n" );
document.write( "1)2x-y+z=-2   ~~~~    2)x-2y+3z=12<BR>\n" );
document.write( "  x+3y-z=10   ~~~~      2x-y-2z=5<BR>\n" );
document.write( "  x +2z=-8    ~~~~      2x+2y-z=4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #167065 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=167065\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve each system by elimination.<BR>\n" );
document.write( "1)<BR>\n" );
document.write( "2x-y+z=-2  <BR>\n" );
document.write( "x+3y-z=10  <BR>\n" );
document.write( "x+0y+2z=-8  <BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Let the 3rd equation be the 1st.<BR>\n" );
document.write( "x+0y+2z=-8<BR>\n" );
document.write( "2x-y+z=-2  <BR>\n" );
document.write( "x+3y-z=10  <BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "2 times the 1st subtracted from the 2nd<BR>\n" );
document.write( "Subtract the 1st from the 3rd<BR>\n" );
document.write( "x+0y+2z=-8<BR>\n" );
document.write( "0x-y-3z=14  <BR>\n" );
document.write( "0x+3y-3z=18<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Add 3 times the 2nd to the 3rd<BR>\n" );
document.write( "x+0y+2z=-8<BR>\n" );
document.write( "0x-y-3z=14  <BR>\n" );
document.write( "0x+0y-12z=60<BR>\n" );
document.write( "--<BR>\n" );
document.write( "Solve the 3rd to get: z = -5<BR>\n" );
document.write( "Substitute into the 2nd to get y = 1<BR>\n" );
document.write( "Substitute those values into the 1st to get x = 2<BR>\n" );
document.write( "=======================================================\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "2)<BR>\n" );
document.write( "x-2y+3z=12<BR>\n" );
document.write( "-2x-y-2z=5<BR>\n" );
document.write( "2x+2y-z=4<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "2 times the 1st added to the 2nd<BR>\n" );
document.write( "2 times the 1st subtracted from the 3rd<BR>\n" );
document.write( "x-2y+3z=12<BR>\n" );
document.write( "0x-5y+4z=29<BR>\n" );
document.write( "0x+6y-7z=-20<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "Add the 2nd to the 3rd<BR>\n" );
document.write( "x-2y+3z=12<BR>\n" );
document.write( "0x-5y+4z=29<BR>\n" );
document.write( "0x+y-3z=9<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "Add 5 times the 3rd to the 2nd:<BR>\n" );
document.write( "x-2y+3z=12<BR>\n" );
document.write( "0x+0y-11z=74<BR>\n" );
document.write( "0x+y-3z=9<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Solve the 2nd to get: z = -74/11<BR>\n" );
document.write( "Substitute into the 3rd to get y = -123/11<BR>\n" );
document.write( "Substitute into the 1st to get x = 108/11<BR>\n" );
document.write( "==========================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );