document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=258522>Question 258522</A>: <I><SPAN STYLE=\"word-break: break-all;\"> alright here goes lol. i tryed to solve it and came up with some strange answers. <BR>\n" );
document.write( "1. 4x+2y+z=7<BR>\n" );
document.write( "   2x+2y-4z=-4<BR>\n" );
document.write( "   x+3y-2z=-8\r<BR>\n" );
document.write( "\n" );
document.write( "My attempts: (sorry for the confusing factor x.x)<BR>\n" );
document.write( "(4x+2y+z=7)4<BR>\n" );
document.write( " 2x+2y-4z=28<BR>\n" );
document.write( "_____________<BR>\n" );
document.write( " 2x+2y=-4<BR>\n" );
document.write( " 16x+8y+28<BR>\n" );
document.write( "___________<BR>\n" );
document.write( "18x+10y=24\r<BR>\n" );
document.write( "\n" );
document.write( "(4x+2y+z=7)2<BR>\n" );
document.write( " x+3y-2z=-8<BR>\n" );
document.write( "____________<BR>\n" );
document.write( "8x+4x+2z=7\r<BR>\n" );
document.write( "\n" );
document.write( "(9x+7y=-1)-2<BR>\n" );
document.write( " 18x+10y=24<BR>\n" );
document.write( "____________<BR>\n" );
document.write( "-18x-14y=2<BR>\n" );
document.write( "18x+10y=24<BR>\n" );
document.write( "___________<BR>\n" );
document.write( "-4y = 26<BR>\n" );
document.write( "___   ___<BR>\n" );
document.write( "-4     -4<BR>\n" );
document.write( "y=-6.5\r<BR>\n" );
document.write( "\n" );
document.write( "18x+10(-6.5)=24\r<BR>\n" );
document.write( "\n" );
document.write( "18x-65=24<BR>\n" );
document.write( "__________<BR>\n" );
document.write( "18x=89<BR>\n" );
document.write( "x=4.94\r<BR>\n" );
document.write( "\n" );
document.write( "4(4.94)+2(-6.5)+z=7<BR>\n" );
document.write( "19.70-13+z=7\r<BR>\n" );
document.write( "\n" );
document.write( "6.76+z=7<BR>\n" );
document.write( "z=.24\r<BR>\n" );
document.write( "\n" );
document.write( "thats it. im sorry its so confusing. im so very confused about this stuff so please help x.x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #190353 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=190353\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 4x+2y+z=7<BR>\n" );
document.write( "2x+2y-4z=-4<BR>\n" );
document.write( "x+3y-2z=-8 <BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Rearrange the equations<BR>\n" );
document.write( "x+3y-2z=-8 <BR>\n" );
document.write( "2x+2y-4z=-4<BR>\n" );
document.write( "4x+2y+z=7<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Divide thru the 2nd equation by 2:<BR>\n" );
document.write( "x+3y-2z=-8 <BR>\n" );
document.write( "x+y-2z=-2<BR>\n" );
document.write( "4x+2y+z=7<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Subtract the 1st from the 2nd<BR>\n" );
document.write( "Subtract 4 times the 2nd from the 3rd<BR>\n" );
document.write( "x+3y-2z=-8 <BR>\n" );
document.write( "0x-2y+0z=6<BR>\n" );
document.write( "0x-2y+9z=15<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Solve the 2nd equation for \"y\":<BR>\n" );
document.write( "y = -3<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Solve the 3rd 3equation for \"z\":<BR>\n" );
document.write( "-2*-3 + 9z = 15<BR>\n" );
document.write( "9z = 9<BR>\n" );
document.write( "z=1<BR>\n" );
document.write( "------------------------------------<BR>\n" );
document.write( "Substitute for y and for z to solve for \"x\":<BR>\n" );
document.write( "x + 3*-3 -2*1 = -8<BR>\n" );
document.write( "x - 11 = -8<BR>\n" );
document.write( "x = 3<BR>\n" );
document.write( "==========================<BR>\n" );
document.write( "x = 3 ; y = -3 ; z = 1<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );